21397692120

Names of 21397692120

• Cardinal: 21397692120 can be written as Twenty-one billion, three hundred ninety-seven million, six hundred ninety-two thousand, one hundred twenty.

Scientific notation

• Scientific notation: 2.139769212 × 10¹⁰

Factors of 21397692120

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 20990

Divisors of 21397692120

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 20 21 23 24 28 30 35 40 42 46 53 56 60 69 70 84 92 105 106 115 120 138 140 159 161 168 184 210 212 230 265 276 280 318 322 345 371 420 424 460 483 530 552 636 644 690 742 795 805 840 920 966 1060 1113 1219 1272 1288 1380 1484 1590 1610 1855 1932 2120 2226 2415 2438 2760 2968 3180 3220 3657 3710 3864 4452 4830 4876 5565 6095 6360 6440 7314 7420 8533 8904 9660 9752 11130 12190 14628 14840 17066 18285 19320 20897 22260 24380 25599 29256 34132 36570 41794 42665 44520 48760 51198 62691 68264 73140 83588 85330 102396 104485 125382 127995 146279 146280 167176 170660 204792 208970 250764 255990 292558 313455 341320 417940 438837 480631 501528 511980 585116 626910 731395 835880 877674 961262 1023960 1107541 1170232 1253820 1441893 1462790 1755348 1922524 2194185 2215082 2403155 2507640 2883786 2925580 3322623 3364417 3510696 3845048 4388370 4430164 4806310 5537705 5767572 5851160 6645246 6728834 7209465 7752787 8776740 8860328 9612620 10093251 11075410 11535144 13290492 13457668 14418930 15505574 16613115 16822085 17553480 19225240 20186502 22150820 23258361 25473443 26580984 26915336 28837860 31011148 33226230 33644170 38763935 40373004 44301640 46516722 50466255 50946886 57675720 62022296 66452460 67288340 76420329 77527870 80746008 93033444 100932510 101893772 116291805 127367215 132904920 134576680 152840658 155055740 178314101 186066888 201865020 203787544 232583610 254734430 305681316 310111480 356628202 382101645 403730040 465167220 509468860 534942303 611362632 713256404 764203290 891570505 930334440 1018937720 1069884606 1426512808 1528406580 1783141010 2139769212 2674711515 3056813160 3566282020 4279538424 5349423030 7132564040 10698846060 21397692120
• Sum of all divisors σ(n): 78001367040
• Sum of proper divisors (its aliquot sum) s(n): 56603674920
• 21397692120 is an abundant number, because the sum of its proper divisors (56603674920) is greater than itself. Its abundance is 35205982800

Bases of 21397692120

• Binary: 10011111011011001101101111011011000₂
• Hexadecimal: 0x4FB66DED8
• Base-36: 9TVMSWO

Squares and roots of 21397692120

• 21397692120 squared (21397692120²) is 457861228062310094400
• 21397692120 cubed (21397692120³) is 9797173591762415575939336128000
• The square root of 21397692120 is 146279.4999991455
• The cube root of 21397692120 is 2776.2312906115

Scales and comparisons

• 21,397,692,120 seconds is equal to 680 years, 19 weeks, 5 days, 11 hours, 22 minutes.
• To count from 1 to 21,397,692,120 would take you about one thousand, three hundred sixty 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 21397692120 cubic inches would be around 231.4 feet tall.

Recreational maths with 21397692120

• 21397692120 backwards is 02129679312
• 21397692120 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21397692120's digits is 42
• More coming soon!