21071129968

Names of 21071129968

• Cardinal: 21071129968 can be written as Twenty-one billion, seventy-one million, one hundred twenty-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1071129968 × 10¹⁰

Factors of 21071129968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 342

Divisors of 21071129968

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 8 14 16 28 56 73 97 112 146 163 194 292 326 388 511 584 652 679 776 1022 1141 1168 1304 1358 1552 2044 2282 2608 2716 4088 4564 5432 7081 8176 9128 10864 11899 14162 15811 18256 23798 26569 28324 31622 47596 49567 53138 56648 63244 83293 95192 99134 106276 110677 113296 126488 166586 185983 190384 198268 212552 221354 252976 333172 371966 396536 425104 442708 666344 743932 793072 885416 1154203 1332688 1487864 1770832 1939537 2308406 2577193 2975728 3879074 4616812 5154386 7758148 8079421 9233624 10308772 13576759 15516296 16158842 18040351 18467248 20617544 27153518 31032592 32317684 36080702 41235088 54307036 64635368 72161404 108614072 129270736 144322808 188135089 217228144 288645616 376270178 752540356 1316945623 1505080712 2633891246 3010161424 5267782492 10535564984 21071129968
• Sum of all divisors σ(n): 48079193568
• Sum of proper divisors (its aliquot sum) s(n): 27008063600
• 21071129968 is an abundant number, because the sum of its proper divisors (27008063600) is greater than itself. Its abundance is 5936933632

Bases of 21071129968

• Binary: 10011100111111011111110110101110000₂
• Hexadecimal: 0x4E7EFED70
• Base-36: 9OH7FXS

Squares and roots of 21071129968

• 21071129968 squared (21071129968²) is 443992518128347681024
• 21071129968 cubed (21071129968³) is 9355424054302010091948111327232
• The square root of 21071129968 is 145158.9816993767
• The cube root of 21071129968 is 2762.0356214239

Scales and comparisons

• 21,071,129,968 seconds is equal to 669 years, 51 weeks, 5 days, 19 hours, 39 minutes, 28 seconds.
• To count from 1 to 21,071,129,968 would take you about one thousand, three hundred thirty-nine 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 21071129968 cubic inches would be around 230.2 feet tall.

Recreational maths with 21071129968

• 21071129968 backwards is 86992117012
• The number of decimal digits it has is: 11
• The sum of 21071129968's digits is 46
• More coming soon!