| Nominal | 28640 |
| Cardinal | twenty-eight thousand six hundred forty |
Cardinal twenty-eight thousand six hundred forty | |
| Ordinal | 28,640th |
| Number of digits | 5 |
| Sum of digits | 20 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 2 x 2 x 5 x 179 |
| Prime factorization in exponent form | 25 x 5 x 179 |
| Prime factors | 2, 5, 179 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 7 |
| Sum of prime factors | 186 |
| Product of prime factors | 1790 |
| Is 28640 a prime number? | No |
| Is 28640 a semiprime number? | No |
| Is 28640 a Chen prime number? | No |
| Is 28640 a Mersenne prime number? | No |
| Is 28640 a Catalan number? | No |
| Is 28640 a Fibonacci number? | No |
| Is 28640 a Idoneal number? | No |
| Square of 28640 (n2) | 820249600 |
| Cube of 28640 (n3) | 23491948544000 |
| Square root of 28640 | 169.23356641045 |
| Natural Logarithm (ln) of 28640 | 10.262559621075 |
| Decimal Logarithm (log) of 28640 | 4.4569730136358 |
| Sine of 28640 | 0.94622804235554 |
| Cosecant of 28640 | 1.0568276939992 |
| Cosine of 28640 | 0.32350037381742 |
| Secant of 28640 | 3.0911865361998 |
| Tangent of 28640 | 2.9249673847041 |
| Cotangent of 28640 | 0.34188415406935 |
| The spelling of 28640 in words is "twenty-eight thousand six hundred forty", meaning that: |
| 28640 is not an aban number (as it contains the letter a) |
| 28640 is not an eban number (as it contains the letter e) |
| 28640 is not an iban number (as it contains the letter i) |
| 28640 is not an oban number (as it contains the letter o) |
| 28640 is not a tban number (as it contains the letter t) |
| 28640 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২৮৬৪০ |
| Eastern Arabic numerals | ٢٨٬٦٤٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍧𓎉 |
| Khmer numerals | ២៨៦៤០ |
| Japanese numerals | 二万八千六百四十 |
| Roman numerals | n/a |
| Thai numerals | ๒๘๖๔๐ |
| Arabic | ثمانية و عشرون ألف و ستة مائة و أربعون |
| Croatian | dvadeset i osam tisuća šeststo četrdeset |
| Czech | dvacet osm tisíc šest set čtyřicet |
| Danish | otte og tyve tusinde seks hundrede fyrre |
| Dutch | achtentwintigduizend zeshonderdveertig |
| Estonian | akpe blaeve vɔ enyi alafa ade kple blaene |
| Faroese | tjúgoátta tusin og sekshundraðogfýrati |
| Filipino | dalawáng pû’t walóng libó’t anim na daán at ápat na pû |
| Finnish | kaksikymmentäkahdeksantuhattakuusisataaneljäkymmentä |
| French | vingt-huit mille six cent quarante |
| Greek | είκοσι οκτώ χίλιάδες εξακόσια σαράντα |
| German | achtundzwanzigtausendsechshundertvierzig |
| Hebrew | עשרים ושמונה אלף שש מאות ארבעים |
| Hindi | अट्ठाईस हज़ार छह सौ चालीस |
| Hungarian | huszonnyolcezerhatszáznegyven |
| Icelandic | tuttugu og átta þúsund og sexhundrað og fjörutíu |
| Indonesian | dua puluh delapan ribu enam ratus empat puluh |
| Italian | ventottomilaseicentoquaranta |
| Japanese | 二万八千六百四十 |
| Korean | 이만 팔천육백사십 |
| Latvian | divdesmit astoņi tūkstoši sešsimt četrdesmit |
| Lithuanian | dvidešimt aštuoni tūkstančiai šeši šimtai keturiasdešimt |
| Norwegian | tjueåtte tusen seks hundre og førti |
| Persian | بیست و هشت هزار و ششصد و چهل |
| Polish | dwadzieścia osiem tysięcy sześćset czterdzieści |
| Portuguese | vinte e oito mil seiscentos e quarenta |
| Romanian | douăzeci şi opt mii şase sute patruzeci |
| Russian | двадцать восемь тысяч шестьсот сорок |
| Serbian | двадесет и осам хиљада шестсто четрдесет |
| Slovak | dvadsaťosem tisíc šesťsto štyridsať |
| Slovene | dvaset osem tisuću šesto štirideset |
| Spanish | veintiocho mil seiscientos cuarenta |
| Swahili | elfu ishirini na nane, mia sita na arobaini |
| Swedish | tjugoåttatusensexhundrafyrtio |
| Thai | สองหมื่นแปดพันหกร้อยสี่สิบ |
| Turkish | yirmi sekiz bin altı yüz kırk |
| Ukrainian | двадцять вісім тисяч шістсот сорок |
| Vietnamese | hai mươi tám nghìn sáu trăm bốn mươi |
| Number 28640 reversed | 04682 | |
| Unicode Character | U+6FE0 | 濠 |
| Unix Timestamp | Thu, 01 Jan 1970 07:57:20 +0000 | |