| Nominal | 28221 |
| Cardinal | twenty-eight thousand two hundred twenty-one |
Cardinal twenty-eight thousand two hundred twenty-one | |
| Ordinal | 28,221st |
| Number of digits | 5 |
| Sum of digits | 15 |
| Product of digits | 64 |
| Number parity | Odd |
| Prime factorization | 3 x 23 x 409 |
| Prime factors | 3, 23, 409 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 3 |
| Sum of prime factors | 435 |
| Product of prime factors | 28221 |
| Is 28221 a prime number? | No |
| Is 28221 a semiprime number? | No |
| Is 28221 a Chen prime number? | No |
| Is 28221 a Mersenne prime number? | No |
| Is 28221 a Catalan number? | No |
| Is 28221 a Fibonacci number? | No |
| Is 28221 a Idoneal number? | No |
| Square of 28221 (n2) | 796424841 |
| Cube of 28221 (n3) | 22475905437861 |
| Square root of 28221 | 167.9910711913 |
| Natural Logarithm (ln) of 28221 | 10.24782166064 |
| Decimal Logarithm (log) of 28221 | 4.4505723987446 |
| Sine of 28221 | -0.07312746914208 |
| Cosecant of 28221 | -13.674751932917 |
| Cosine of 28221 | -0.99732260239948 |
| Secant of 28221 | -1.0026845853028 |
| Tangent of 28221 | 0.073323786070967 |
| Cotangent of 28221 | 13.638139184904 |
| The spelling of 28221 in words is "twenty-eight thousand two hundred twenty-one", meaning that: |
| 28221 is not an aban number (as it contains the letter a) |
| 28221 is not an eban number (as it contains the letter e) |
| 28221 is not an iban number (as it contains the letter i) |
| 28221 is not an oban number (as it contains the letter o) |
| 28221 is not a tban number (as it contains the letter t) |
| 28221 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২৮২২১ |
| Eastern Arabic numerals | ٢٨٬٢٢١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍣𓎇𓏺 |
| Khmer numerals | ២៨២២១ |
| Japanese numerals | 二万八千二百二十一 |
| Roman numerals | n/a |
| Thai numerals | ๒๘๒๒๑ |
| Arabic | ثمانية و عشرون ألف و مائتان و واحد و عشرون |
| Croatian | dvadeset i osam tisuća dvjesto dvadeset i jedan |
| Czech | dvacet osm tisíc dvě stě dvacet jeden |
| Danish | otte og tyve tusinde to hundrede en og tyve |
| Dutch | achtentwintigduizend tweehonderdéénentwintig |
| Estonian | akpe blaeve vɔ enyi alafa eve blaeve vɔ ɖekɛ |
| Faroese | tjúgoátta tusin og tveyhundraðogtjúgoein |
| Filipino | dalawáng pû’t walóng libó’t dalawáng daán at dalawáng pû’t isá |
| Finnish | kaksikymmentäkahdeksantuhattakaksisataakaksikymmentäyksi |
| French | vingt-huit mille deux cent vingt et un |
| Greek | είκοσι οκτώ χίλιάδες διακόσια είκοσι ένα |
| German | achtundzwanzigtausendzweihunderteinundzwanzig |
| Hebrew | עשרים ושמונה אלף מאתיים עשרים ואחת |
| Hindi | अट्ठाईस हज़ार दो सौ इक्कीस |
| Hungarian | huszonnyolcezerkétszázhuszonegy |
| Icelandic | tuttugu og átta þúsund og tvöhundrað og tuttugu og einn |
| Indonesian | dua puluh delapan ribu dua ratus dua puluh satu |
| Italian | ventottomiladuecentoventuno |
| Japanese | 二万八千二百二十一 |
| Korean | 이만 팔천이백이십일 |
| Latvian | divdesmit astoņi tūkstoši divsimt divdesmit viens |
| Lithuanian | dvidešimt aštuoni tūkstančiai du šimtai dvidešimt vienas |
| Norwegian | tjueåtte tusen to hundre og tjueén |
| Persian | بیست و هشت هزار و دویست و بیست و یک |
| Polish | dwadzieścia osiem tysięcy dwieście dwadzieścia jeden |
| Portuguese | vinte e oito mil duzentos e vinte e um |
| Romanian | douăzeci şi opt mii două sute douăzeci şi unu |
| Russian | двадцать восемь тысяч двести двадцать один |
| Serbian | двадесет и осам хиљада двеста двадесет и један |
| Slovak | dvadsaťosem tisíc dvesto dvadsaťjeden |
| Slovene | dvaset osem tisuću dvjesto dvaset ena |
| Spanish | veintiocho mil doscientos veintiuno |
| Swahili | elfu ishirini na nane, mia mbili na ishirini na moja |
| Swedish | tjugoåttatusentvåhundratjugoen |
| Thai | สองหมื่นแปดพันสองร้อยยี่สิบเอ็ด |
| Turkish | yirmi sekiz bin iki yüz yirmi bir |
| Ukrainian | двадцять вісім тисяч двісті двадцять один |
| Vietnamese | hai mươi tám nghìn hai trăm hai mươi mốt |
| Number 28221 reversed | 12282 | |
| Unicode Character | U+6E3D | 渽 |
| Unix Timestamp | Thu, 01 Jan 1970 07:50:21 +0000 | |