21917307321

Names of 21917307321

• Cardinal: 21917307321 can be written as Twenty-one billion, nine hundred seventeen million, three hundred seven thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 2.1917307321 × 10¹⁰

Factors of 21917307321

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1951

Divisors of 21917307321

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 81 91 117 127 169 189 273 351 381 507 567 819 889 1053 1143 1183 1521 1651 1801 2457 2667 3429 3549 4563 4953 5403 7371 8001 10287 10647 11557 12607 13689 14859 16209 21463 23413 24003 31941 34671 37821 44577 48627 64389 70239 72009 95823 104013 113463 133731 145881 150241 163891 193167 210717 228727 304369 312039 340389 450723 491673 579501 632151 686181 913107 936117 1021167 1352169 1475019 1601089 1738503 1896453 2058543 2130583 2739321 2973451 4056507 4425057 4803267 6175629 6391749 8217963 8920353 12169521 13275171 14409801 18526887 19175247 20814157 24653889 26761059 38654863 43229403 57525741 62442471 80283177 115964589 129688209 172577223 187327413 240849531 270584041 347893767 561982239 811752123 1043681301 1685946717 2435256369 3131043903 7305769107 21917307321
• Sum of all divisors σ(n): 40859326464
• Sum of proper divisors (its aliquot sum) s(n): 18942019143
• 21917307321 is a deficient number, because the sum of its proper divisors (18942019143) is less than itself. Its deficiency is 2975288178

Bases of 21917307321

• Binary: 10100011010010111111001000110111001₂
• Hexadecimal: 0x51A5F91B9
• Base-36: A2GZYK9

Squares and roots of 21917307321

• 21917307321 squared (21917307321²) is 480368360203160197041
• 21917307321 cubed (21917307321³) is 10528380977857488033942511837161
• The square root of 21917307321 is 148044.9503394155
• The cube root of 21917307321 is 2798.5241934087

Scales and comparisons

• 21,917,307,321 seconds is equal to 696 years, 46 weeks, 6 days, 12 hours, 55 minutes, 21 seconds.
• To count from 1 to 21,917,307,321 would take you about one thousand, three hundred ninety-three 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 21917307321 cubic inches would be around 233.2 feet tall.

Recreational maths with 21917307321

• 21917307321 backwards is 12370371912
• The number of decimal digits it has is: 11
• The sum of 21917307321's digits is 36
• More coming soon!