21055288970

Names of 21055288970

• Cardinal: 21055288970 can be written as Twenty-one billion, fifty-five million, two hundred eighty-eight thousand, nine hundred seventy.

Scientific notation

• Scientific notation: 2.105528897 × 10¹⁰

Factors of 21055288970

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 414

Divisors of 21055288970

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 5 10 17 31 34 62 85 155 170 310 359 527 718 961 1054 1795 1922 2635 3590 4805 5270 6103 9610 11129 12206 16337 22258 30515 32674 55645 61030 81685 111290 128881 163370 189193 257762 344999 378386 644405 689998 945965 1288810 1724995 1891930 2190977 3449990 3995311 4381954 5864983 7990622 10954885 11729966 19976555 21909770 29324915 39953110 58649830 67920287 123854641 135840574 247709282 339601435 619273205 679202870 1238546410 2105528897 4211057794 10527644485 21055288970
• Sum of all divisors σ(n): 41580965412
• Sum of proper divisors (its aliquot sum) s(n): 20525676442
• 21055288970 is a deficient number, because the sum of its proper divisors (20525676442) is less than itself. Its deficiency is 529612528

Bases of 21055288970

• Binary: 10011100110111111100011011010001010₂
• Hexadecimal: 0x4E6FE368A
• Base-36: 9O7RWY2

Squares and roots of 21055288970

• 21055288970 squared (21055288970²) is 443325193610203660900
• 21055288970 cubed (21055288970³) is 9334340059144035620801390273000
• The square root of 21055288970 is 145104.4071350005
• The cube root of 21055288970 is 2761.3432938995

Scales and comparisons

• 21,055,288,970 seconds is equal to 669 years, 25 weeks, 4 days, 11 hours, 22 minutes, 50 seconds.
• To count from 1 to 21,055,288,970 would take you about one thousand, three hundred thirty-eight 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 21055288970 cubic inches would be around 230.1 feet tall.

Recreational maths with 21055288970

• 21055288970 backwards is 07988255012
• The number of decimal digits it has is: 11
• The sum of 21055288970's digits is 47
• More coming soon!