diff --git a/sc/qa/unit/data/xls/pivottable_number_grouping.xls b/sc/qa/unit/data/xls/pivottable_number_grouping.xls
new file mode 100644
index 000000000000..784bb74fafe8
Binary files /dev/null and b/sc/qa/unit/data/xls/pivottable_number_grouping.xls differ
diff --git a/sc/qa/unit/pivottable_filters_test.cxx b/sc/qa/unit/pivottable_filters_test.cxx
index 39b00a0602d6..34d05bbb5016 100644
--- a/sc/qa/unit/pivottable_filters_test.cxx
+++ b/sc/qa/unit/pivottable_filters_test.cxx
@@ -3011,6 +3011,20 @@ CPPUNIT_TEST_FIXTURE(ScPivotTableFiltersTest, testCalcFieldNameErrorXLSX)
     CPPUNIT_ASSERT_EQUAL(u"IF(#NAME? >0,#NAME?,0)"_ustr, aFormula);
 }
 
+CPPUNIT_TEST_FIXTURE(ScPivotTableFiltersTest, testNumberGroupingXLS)
+{
+    createScDoc("xls/pivottable_number_grouping.xls");
+    save(TestFilter::XLSX);
+
+    xmlDocUniquePtr pCacheDef = parseExport(u"xl/pivotCache/pivotCacheDefinition1.xml"_ustr);
+    CPPUNIT_ASSERT(pCacheDef);
+
+    assertXPath(pCacheDef,
+                "/x:pivotCacheDefinition/x:cacheFields/x:cacheField[@databaseField='0']/"
+                "x:fieldGroup/x:groupItems",
+                "count", u"3");
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/sc/source/filter/excel/xipivot.cxx b/sc/source/filter/excel/xipivot.cxx
index 78602724ce88..f8ac4052f599 100644
--- a/sc/source/filter/excel/xipivot.cxx
+++ b/sc/source/filter/excel/xipivot.cxx
@@ -404,6 +404,18 @@ void XclImpPCField::ConvertGroupField( ScDPSaveData& rSaveData, const ScfStringV
 
 // private --------------------------------------------------------------------
 
+static OUString lcl_ItemToText( const XclImpPCItem& rItem )
+{
+    const OUString& rText = rItem.ConvertToText();
+    if( !rText.isEmpty() )
+        return rText;
+    if( const double* pVal = rItem.GetDouble() )
+        return OUString::number( *pVal );
+    if( const sal_Int16* pVal = rItem.GetInteger() )
+        return OUString::number( *pVal );
+    return rText;
+}
+
 void XclImpPCField::ConvertStdGroupField( ScDPSaveData& rSaveData, const ScfStringVec& rVisNames ) const
 {
     const XclImpPCField* pBaseField = GetGroupBaseField();
@@ -419,7 +431,7 @@ void XclImpPCField::ConvertStdGroupField( ScDPSaveData& rSaveData, const ScfStri
     aGroupItems.reserve( maItems.size() );
     // initialize with own item names
     for( const auto& rxItem : maItems )
-        aGroupItems.emplace_back( rxItem->ConvertToText() );
+        aGroupItems.emplace_back(lcl_ItemToText(*rxItem));
 
     // *** iterate over all base items, set their names at corresponding own items ***
     for( sal_uInt16 nItemIdx = 0, nItemCount = static_cast< sal_uInt16 >( maGroupOrder.size() ); nItemIdx < nItemCount; ++nItemIdx )
@@ -427,7 +439,7 @@ void XclImpPCField::ConvertStdGroupField( ScDPSaveData& rSaveData, const ScfStri
             if( const XclImpPCItem* pBaseItem = pBaseField->GetItem( nItemIdx ) )
                 if( const XclImpPCItem* pGroupItem = GetItem( maGroupOrder[ nItemIdx ] ) )
                     if( *pBaseItem != *pGroupItem )
-                        aGroupItems[ maGroupOrder[ nItemIdx ] ].AddElement( pBaseItem->ConvertToText() );
+                        aGroupItems[maGroupOrder[nItemIdx]].AddElement(lcl_ItemToText(*pBaseItem));
 
     // *** create the ScDPSaveGroupDimension object, fill with grouping info ***
     ScDPSaveGroupDimension aGroupDim( rBaseFieldName, GetFieldName( rVisNames ) );