| Nominal | 21328 |
| Cardinal | twenty-one thousand three hundred twenty-eight |
Cardinal twenty-one thousand three hundred twenty-eight | |
| Ordinal | 21,328th |
| Number of digits | 5 |
| Sum of digits | 16 |
| Product of digits | 96 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 2 x 31 x 43 |
| Prime factorization in exponent form | 24 x 31 x 43 |
| Prime factors | 2, 31, 43 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 6 |
| Sum of prime factors | 76 |
| Product of prime factors | 2666 |
| Is 21328 a prime number? | No |
| Is 21328 a semiprime number? | No |
| Is 21328 a Chen prime number? | No |
| Is 21328 a Mersenne prime number? | No |
| Is 21328 a Catalan number? | No |
| Is 21328 a Fibonacci number? | No |
| Is 21328 a Idoneal number? | No |
| Square of 21328 (n2) | 454883584 |
| Cube of 21328 (n3) | 9701757079552 |
| Square root of 21328 | 146.04109010823 |
| Natural Logarithm (ln) of 21328 | 9.9677760424185 |
| Decimal Logarithm (log) of 21328 | 4.3289501320698 |
| Sine of 21328 | 0.26916431827314 |
| Cosecant of 21328 | 3.7152026925992 |
| Cosine of 21328 | -0.96309426837073 |
| Secant of 21328 | -1.0383199577044 |
| Tangent of 21328 | -0.27947868356489 |
| Cotangent of 21328 | -3.5780904190778 |
| The spelling of 21328 in words is "twenty-one thousand three hundred twenty-eight", meaning that: |
| 21328 is not an aban number (as it contains the letter a) |
| 21328 is not an eban number (as it contains the letter e) |
| 21328 is not an iban number (as it contains the letter i) |
| 21328 is not an oban number (as it contains the letter o) |
| 21328 is not a tban number (as it contains the letter t) |
| 21328 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৩২৮ |
| Eastern Arabic numerals | ٢١٬٣٢٨ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍤𓎇𓐁 |
| Khmer numerals | ២១៣២៨ |
| Japanese numerals | 二万千三百二十八 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๓๒๘ |
| Arabic | واحد و عشرون ألف و ثلاثة مائة و ثمانية و عشرون |
| Croatian | dvadeset i jedna tisuća tristo dvadeset i osam |
| Czech | dvacet jedna tisíc tři sta dvacet osm |
| Danish | en og tyve tusinde tre hundrede otte og tyve |
| Dutch | éénentwintigduizend driehonderdachtentwintig |
| Estonian | akpe blaeve vɔ ɖekɛ alafa etɔ̃ blaeve vɔ enyi |
| Faroese | tjúgoeitt tusin og trýhundraðogtjúgoátta |
| Filipino | dalawáng pû’t isáng libó’t tatlóng daán at dalawáng pû’t waló |
| Finnish | kaksikymmentäyksituhattakolmesataakaksikymmentäkahdeksan |
| French | vingt et un mille trois cent vingt-huit |
| Greek | είκοσι μία χίλιάδες τριακόσια είκοσι οκτώ |
| German | einundzwanzigtausenddreihundertachtundzwanzig |
| Hebrew | עשרים ואחד אלף שלוש מאות עשרים ושמונה |
| Hindi | इक्कीस हज़ार तीन सौ अट्ठाईस |
| Hungarian | huszonegyezerháromszázhuszonnyolc |
| Icelandic | tuttugu og eitt þúsund og þrjúhundrað og tuttugu og átta |
| Indonesian | dua puluh satu ribu tiga ratus dua puluh delapan |
| Italian | ventunomilatrecentoventotto |
| Japanese | 二万千三百二十八 |
| Korean | 이만 천삼백이십팔 |
| Latvian | divdesmit viens tūkstoši trīssimt divdesmit astoņi |
| Lithuanian | dvidešimt vienas tūkstantis trys šimtai dvidešimt aštuoni |
| Norwegian | tjueett tusen tre hundre og tjueåtte |
| Persian | بیست و یک هزار و سیصد و بیست و هشت |
| Polish | dwadzieścia jeden tysięcy trzysta dwadzieścia osiem |
| Portuguese | vinte e um mil trezentos e vinte e oito |
| Romanian | douăzeci şi una mii trei sute douăzeci şi opt |
| Russian | двадцать одна тысяча триста двадцать восемь |
| Serbian | двадесет и једна хиљада триста двадесет и осам |
| Slovak | dvadsaťjedna tisíc tristo dvadsaťosem |
| Slovene | dvaset ena tisuću tristo dvaset osem |
| Spanish | veintiún mil trescientos veintiocho |
| Swahili | elfu ishirini na moja, mia tatu na ishirini na nane |
| Swedish | tjugoentusentrehundratjugoåtta |
| Thai | สองหมื่นหนึ่งพันสามร้อยยี่สิบแปด |
| Turkish | yirmi bir bin üç yüz yirmi sekiz |
| Ukrainian | двадцять одна тисяча триста двадцять вісім |
| Vietnamese | hai mươi mốt nghìn ba trăm hai mươi tám |
| Number 21328 reversed | 82312 | |
| Unicode Character | U+5350 | 卐 |
| Unix Timestamp | Thu, 01 Jan 1970 05:55:28 +0000 | |