21801730020

Names of 21801730020

• Cardinal: 21801730020 can be written as Twenty-one billion, eight hundred one million, seven hundred thirty thousand and twenty.

Scientific notation

• Scientific notation: 2.180173002 × 10¹⁰

Factors of 21801730020

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5800

Divisors of 21801730020

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 71 84 105 131 140 142 210 213 262 284 355 393 420 426 497 524 655 710 786 852 917 994 1065 1310 1420 1491 1572 1834 1965 1988 2130 2485 2620 2751 2982 3668 3930 4260 4585 4970 5502 5581 5964 7455 7860 9170 9301 9940 11004 11162 13755 14910 16743 18340 18602 22324 27510 27903 27905 29820 33486 37204 39067 46505 55020 55806 55810 65107 66972 78134 83715 93010 111612 111620 117201 130214 139515 156268 167430 186020 195321 195335 234402 260428 279030 325535 334860 390642 390670 396251 468804 558060 586005 651070 731111 781284 781340 792502 976605 1172010 1188753 1302140 1462222 1585004 1953210 1981255 2193333 2344020 2377506 2773757 2924444 3655555 3906420 3962510 4386666 4755012 5117777 5547514 5943765 7311110 7925020 8321271 8773332 10235554 10966665 11095028 11887530 13868785 14622220 15353331 16642542 20471108 21933330 23775060 25588885 27737570 30706662 33285084 41606355 43866660 51177770 51908881 55475140 61413324 76766655 83212710 102355540 103817762 153533310 155726643 166425420 207635524 259544405 307066620 311453286 363362167 519088810 622906572 726724334 778633215 1038177620 1090086501 1453448668 1557266430 1816810835 2180173002 3114532860 3633621670 4360346004 5450432505 7267243340 10900865010 21801730020
• Sum of all divisors σ(n): 71300984832
• Sum of proper divisors (its aliquot sum) s(n): 49499254812
• 21801730020 is an abundant number, because the sum of its proper divisors (49499254812) is greater than itself. Its abundance is 27697524792

Bases of 21801730020

• Binary: 10100010011011110111111111111100100₂
• Hexadecimal: 0x5137BFFE4
• Base-36: A0K6QJO

Squares and roots of 21801730020

• 21801730020 squared (21801730020²) is 475315431864969200400
• 21801730020 cubed (21801730020³) is 10362698719859763602736076008000
• The square root of 21801730020 is 147654.0890730763
• The cube root of 21801730020 is 2793.5963360773

Scales and comparisons

• 21,801,730,020 seconds is equal to 693 years, 11 weeks, 5 days, 20 hours, 7 minutes.
• To count from 1 to 21,801,730,020 would take you about one thousand, three hundred eighty-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 21801730020 cubic inches would be around 232.8 feet tall.

Recreational maths with 21801730020

• 21801730020 backwards is 02003710812
• The number of decimal digits it has is: 11
• The sum of 21801730020's digits is 24
• More coming soon!