21271590990

Names of 21271590990

• Cardinal: 21271590990 can be written as Twenty-one billion, two hundred seventy-one million, five hundred ninety thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 2.127159099 × 10¹⁰

Factors of 21271590990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 59551

Divisors of 21271590990

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 26 30 39 45 65 78 90 117 130 195 234 307 390 585 614 921 1170 1535 1842 2763 3070 3991 4605 5526 7982 9210 11973 13815 19955 23946 27630 35919 39910 59221 59865 71838 118442 119730 177663 179595 296105 355326 359190 532989 592210 769873 888315 1065978 1539746 1776630 2309619 2664945 3849365 4619238 5329890 6928857 7698730 11548095 13857714 18180847 23096190 34644285 36361694 54542541 69288570 90904235 109085082 163627623 181808470 236351011 272712705 327255246 472702022 545425410 709053033 818138115 1181755055 1418106066 1636276230 2127159099 2363510110 3545265165 4254318198 7090530330 10635795495 21271590990
• Sum of all divisors σ(n): 59755471776
• Sum of proper divisors (its aliquot sum) s(n): 38483880786
• 21271590990 is an abundant number, because the sum of its proper divisors (38483880786) is greater than itself. Its abundance is 17212289796

Bases of 21271590990

• Binary: 10011110011111000101011100001001110₂
• Hexadecimal: 0x4F3E2B84E
• Base-36: 9RSK0NI

Squares and roots of 21271590990

• 21271590990 squared (21271590990²) is 452480583245849180100
• 21271590990 cubed (21271590990³) is 9624981897722350374314047299000
• The square root of 21271590990 is 145847.8350542099
• The cube root of 21271590990 is 2770.7669026535

Scales and comparisons

• 21,271,590,990 seconds is equal to 676 years, 19 weeks, 1 day, 23 hours, 16 minutes, 30 seconds.
• To count from 1 to 21,271,590,990 would take you about one thousand, three hundred fifty-two 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 21271590990 cubic inches would be around 230.9 feet tall.

Recreational maths with 21271590990

• 21271590990 backwards is 09909517212
• 21271590990 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21271590990's digits is 45
• More coming soon!