21010625640

Names of 21010625640

• Cardinal: 21010625640 can be written as Twenty-one billion, ten million, six hundred twenty-five thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.101062564 × 10¹⁰

Factors of 21010625640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2664

Divisors of 21010625640

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 307 324 360 405 486 540 614 648 729 810 921 972 1080 1215 1228 1458 1535 1620 1842 1944 2347 2430 2456 2763 2916 3070 3240 3645 3684 4605 4694 4860 5526 5832 6140 7041 7290 7368 8289 9210 9388 9720 11052 11735 12280 13815 14082 14580 16578 18420 18776 21123 22104 23470 24867 27630 28164 29160 33156 35205 36840 41445 42246 46940 49734 55260 56328 63369 66312 70410 74601 82890 84492 93880 99468 105615 110520 124335 126738 140820 149202 165780 168984 190107 198936 211230 223803 248670 253476 281640 298404 316845 331560 373005 380214 422460 447606 497340 506952 570321 596808 633690 720529 746010 760428 844920 895212 950535 994680 1119015 1140642 1267380 1441058 1492020 1520856 1710963 1790424 1901070 2161587 2238030 2281284 2534760 2851605 2882116 2984040 3421926 3602645 3802140 4323174 4476060 4562568 5703210 5764232 6484761 6843852 7205290 7604280 8554815 8646348 8952120 10807935 11406420 12969522 13687704 14410580 17109630 17292696 19454283 21615870 22812840 25939044 28821160 32423805 34219260 38908566 43231740 51878088 58362849 64847610 68438520 77817132 86463480 97271415 116725698 129695220 155634264 175088547 194542830 233451396 259390440 291814245 350177094 389085660 466902792 525265641 583628490 700354188 778171320 875442735 1050531282 1167256980 1400708376 1750885470 2101062564 2334513960 2626328205 3501770940 4202125128 5252656410 7003541880 10505312820 21010625640
• Sum of all divisors σ(n): 71139610080
• Sum of proper divisors (its aliquot sum) s(n): 50128984440
• 21010625640 is an abundant number, because the sum of its proper divisors (50128984440) is greater than itself. Its abundance is 29118358800

Bases of 21010625640

• Binary: 10011100100010101001011010001101000₂
• Hexadecimal: 0x4E454B468
• Base-36: 9NH6MI0

Squares and roots of 21010625640

• 21010625640 squared (21010625640²) is 441446389784225409600
• 21010625640 cubed (21010625640³) is 9275064835885880458481262144000
• The square root of 21010625640 is 144950.4247665387
• The cube root of 21010625640 is 2759.3894207005

Scales and comparisons

• 21,010,625,640 seconds is equal to 668 years, 3 weeks, 5 days, 12 hours, 54 minutes.
• To count from 1 to 21,010,625,640 would take you about one thousand, three hundred thirty-six 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 21010625640 cubic inches would be around 229.9 feet tall.

Recreational maths with 21010625640

• 21010625640 backwards is 04652601012
• 21010625640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21010625640's digits is 27
• More coming soon!