21249273456

Names of 21249273456

• Cardinal: 21249273456 can be written as Twenty-one billion, two hundred forty-nine million, two hundred seventy-three thousand, four hundred fifty-six.

Scientific notation

• Scientific notation: 2.1249273456 × 10¹⁰

Factors of 21249273456

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1195

Divisors of 21249273456

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 37 48 54 72 74 108 111 144 148 216 222 296 333 432 444 592 666 888 999 1153 1332 1776 1998 2306 2664 3459 3996 4612 5328 6918 7992 9224 10377 13836 15984 18448 20754 27672 31131 41508 42661 55344 62262 83016 85322 124524 127983 166032 170644 249048 255966 341288 383949 498096 511932 682576 767898 1023864 1151847 1329409 1535796 2047728 2303694 2658818 3071592 3988227 4607388 5317636 6143184 7976454 9214776 10635272 11964681 15952908 18429552 21270544 23929362 31905816 35894043 47858724 49188133 63811632 71788086 95717448 98376266 143576172 147564399 191434896 196752532 287152344 295128798 393505064 442693197 574304688 590257596 787010128 885386394 1180515192 1328079591 1770772788 2361030384 2656159182 3541545576 5312318364 7083091152 10624636728 21249273456
• Sum of all divisors σ(n): 62696128560
• Sum of proper divisors (its aliquot sum) s(n): 41446855104
• 21249273456 is an abundant number, because the sum of its proper divisors (41446855104) is greater than itself. Its abundance is 20197581648

Bases of 21249273456

• Binary: 10011110010100011100010111001110000₂
• Hexadecimal: 0x4F28E2E70
• Base-36: 9RF9OC0

Squares and roots of 21249273456

• 21249273456 squared (21249273456²) is 451531622407866183936
• 21249273456 cubed (21249273456³) is 9594718918576085707911258402816
• The square root of 21249273456 is 145771.3053244703
• The cube root of 21249273456 is 2769.7975609157

Scales and comparisons

• 21,249,273,456 seconds is equal to 675 years, 34 weeks, 2 days, 15 hours, 57 minutes, 36 seconds.
• To count from 1 to 21,249,273,456 would take you about one thousand, three hundred fifty-one years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21249273456 cubic inches would be around 230.8 feet tall.

Recreational maths with 21249273456

• 21249273456 backwards is 65437294212
• The number of decimal digits it has is: 11
• The sum of 21249273456's digits is 45
• More coming soon!