21,980

... 21,977 - 21,978 - 21,979 - 21,980 - 21,981 - 21,982 - 21,983 ...

URI: http://km.aifb.kit.edu/projects/numbers/n21980 [URI4URI]

Names

Estonian: kakskümmend üks tuhat üheksasada kaheksakümmend
Czech: dvacet jedna tisíc devìt set osmdesát
Portuguese: vinte e um mil novecentos e oitenta
Lithuanian: dvideðimt vienas tûkstantis devyni ðimtai aðtuoniasdeðimt
French: vingt et un mille neuf cent quatre-vingts
Italian: ventunomilanovecentoottanta
Spanish: veintiún mil novecientos ochenta
German: einundzwanzigtausendneunhundertachtzig
English: twenty-one thousand nine hundred eighty

Other systems

Binary: 101010111011100
Octal: 52734
Duodecimal: 10878
Hexadecimal: 55dc
Hexatridecimal: gyk

Properties

Natural logarithm: 9.9978882279576
Binary logarithm: 14.423903765837
Common logarithm: 4.3420276880875
Prime factors: 1 * 2 * 2 * 5 * 7 * 157
Digit sum: 20

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