diff --git a/homeassistant/components/knx/number.py b/homeassistant/components/knx/number.py
index 9f12aa4ce24..fbf4db3f5b2 100644
--- a/homeassistant/components/knx/number.py
+++ b/homeassistant/components/knx/number.py
@@ -7,7 +7,7 @@ from xknx import XKNX
 from xknx.devices import NumericValue
 
 from homeassistant import config_entries
-from homeassistant.components.number import NumberEntity
+from homeassistant.components.number import RestoreNumber
 from homeassistant.const import (
     CONF_ENTITY_CATEGORY,
     CONF_MODE,
@@ -19,7 +19,6 @@ from homeassistant.const import (
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.helpers.restore_state import RestoreEntity
 from homeassistant.helpers.typing import ConfigType
 
 from .const import (
@@ -57,7 +56,7 @@ def _create_numeric_value(xknx: XKNX, config: ConfigType) -> NumericValue:
     )
 
 
-class KNXNumber(KnxEntity, NumberEntity, RestoreEntity):
+class KNXNumber(KnxEntity, RestoreNumber):
     """Representation of a KNX number."""
 
     _device: NumericValue
@@ -65,39 +64,41 @@ class KNXNumber(KnxEntity, NumberEntity, RestoreEntity):
     def __init__(self, xknx: XKNX, config: ConfigType) -> None:
         """Initialize a KNX number."""
         super().__init__(_create_numeric_value(xknx, config))
-        self._attr_max_value = config.get(
+        self._attr_native_max_value = config.get(
             NumberSchema.CONF_MAX,
             self._device.sensor_value.dpt_class.value_max,
         )
-        self._attr_min_value = config.get(
+        self._attr_native_min_value = config.get(
             NumberSchema.CONF_MIN,
             self._device.sensor_value.dpt_class.value_min,
         )
         self._attr_mode = config[CONF_MODE]
-        self._attr_step = config.get(
+        self._attr_native_step = config.get(
             NumberSchema.CONF_STEP,
             self._device.sensor_value.dpt_class.resolution,
         )
         self._attr_entity_category = config.get(CONF_ENTITY_CATEGORY)
         self._attr_unique_id = str(self._device.sensor_value.group_address)
-        self._attr_unit_of_measurement = self._device.unit_of_measurement()
-        self._device.sensor_value.value = max(0, self._attr_min_value)
+        self._attr_native_unit_of_measurement = self._device.unit_of_measurement()
+        self._device.sensor_value.value = max(0, self._attr_native_min_value)
 
     async def async_added_to_hass(self) -> None:
         """Restore last state."""
         await super().async_added_to_hass()
-        if not self._device.sensor_value.readable and (
-            last_state := await self.async_get_last_state()
+        if (
+            not self._device.sensor_value.readable
+            and (last_state := await self.async_get_last_state())
+            and (last_number_data := await self.async_get_last_number_data())
         ):
             if last_state.state not in (STATE_UNKNOWN, STATE_UNAVAILABLE):
-                self._device.sensor_value.value = float(last_state.state)
+                self._device.sensor_value.value = last_number_data.native_value
 
     @property
-    def value(self) -> float:
+    def native_value(self) -> float:
         """Return the entity value to represent the entity state."""
         # self._device.sensor_value.value is set in __init__ so it is never None
         return cast(float, self._device.resolve_state())
 
-    async def async_set_value(self, value: float) -> None:
+    async def async_set_native_value(self, value: float) -> None:
         """Set new value."""
         await self._device.set(value)
diff --git a/tests/components/knx/test_number.py b/tests/components/knx/test_number.py
index 668b046df74..837d7624dae 100644
--- a/tests/components/knx/test_number.py
+++ b/tests/components/knx/test_number.py
@@ -1,6 +1,4 @@
 """Test KNX number."""
-from unittest.mock import patch
-
 import pytest
 
 from homeassistant.components.knx.const import CONF_RESPOND_TO_READ, KNX_ADDRESS
@@ -10,6 +8,8 @@ from homeassistant.core import HomeAssistant, State
 
 from .conftest import KNXTestKit
 
+from tests.common import mock_restore_cache_with_extra_data
+
 
 async def test_number_set_value(hass: HomeAssistant, knx: KNXTestKit):
     """Test KNX number with passive_address and respond_to_read restoring state."""
@@ -64,22 +64,28 @@ async def test_number_restore_and_respond(hass: HomeAssistant, knx: KNXTestKit):
     """Test KNX number with passive_address and respond_to_read restoring state."""
     test_address = "1/1/1"
     test_passive_address = "3/3/3"
-    fake_state = State("number.test", "160")
 
-    with patch(
-        "homeassistant.helpers.restore_state.RestoreEntity.async_get_last_state",
-        return_value=fake_state,
-    ):
-        await knx.setup_integration(
-            {
-                NumberSchema.PLATFORM: {
-                    CONF_NAME: "test",
-                    KNX_ADDRESS: [test_address, test_passive_address],
-                    CONF_RESPOND_TO_READ: True,
-                    CONF_TYPE: "illuminance",
-                }
+    RESTORE_DATA = {
+        "native_max_value": None,  # Ignored by KNX number
+        "native_min_value": None,  # Ignored by KNX number
+        "native_step": None,  # Ignored by KNX number
+        "native_unit_of_measurement": None,  # Ignored by KNX number
+        "native_value": 160.0,
+    }
+
+    mock_restore_cache_with_extra_data(
+        hass, ((State("number.test", "abc"), RESTORE_DATA),)
+    )
+    await knx.setup_integration(
+        {
+            NumberSchema.PLATFORM: {
+                CONF_NAME: "test",
+                KNX_ADDRESS: [test_address, test_passive_address],
+                CONF_RESPOND_TO_READ: True,
+                CONF_TYPE: "illuminance",
             }
-        )
+        }
+    )
     # restored state - doesn't send telegram
     state = hass.states.get("number.test")
     assert state.state == "160.0"