21055131720

Names of 21055131720

• Cardinal: 21055131720 can be written as Twenty-one billion, fifty-five million, one hundred thirty-one thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.105513172 × 10¹⁰

Factors of 21055131720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 491517

Divisors of 21055131720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 17 18 20 21 24 28 30 34 35 36 40 42 45 51 56 60 63 68 70 72 84 85 90 102 105 119 120 126 136 140 153 168 170 180 204 210 238 252 255 280 306 315 340 357 360 408 420 476 504 510 595 612 630 680 714 765 840 952 1020 1071 1190 1224 1260 1428 1530 1785 2040 2142 2380 2520 2856 3060 3570 4284 4760 5355 6120 7140 8568 10710 14280 21420 42840 491483 982966 1474449 1965932 2457415 2948898 3440381 3931864 4423347 4914830 5897796 6880762 7372245 8355211 8846694 9829660 10321143 11795592 13761524 14744490 16710422 17201905 17693388 19659320 20642286 22116735 25065633 27523048 29488980 30963429 33420844 34403810 35386776 41284572 41776055 44233470 50131266 51605715 58486477 58977960 61926858 66841688 68807620 75196899 82569144 83552110 88466940 100262532 103211430 116972954 123853716 125328165 137615240 150393798 154817145 167104220 175459431 176933880 200525064 206422860 233945908 247707432 250656330 292432385 300787596 309634290 334208440 350918862 375984495 412845720 467891816 501312660 526378293 584864770 601575192 619268580 701837724 751968990 877297155 1002625320 1052756586 1169729540 1238537160 1403675448 1503937980 1754594310 2105513172 2339459080 2631891465 3007875960 3509188620 4211026344 5263782930 7018377240 10527565860 21055131720
• Sum of all divisors σ(n): 82805224320
• Sum of proper divisors (its aliquot sum) s(n): 61750092600
• 21055131720 is an abundant number, because the sum of its proper divisors (61750092600) is greater than itself. Its abundance is 40694960880

Bases of 21055131720

• Binary: 10011100110111110111101000001001000₂
• Hexadecimal: 0x4E6FBD048
• Base-36: 9O7OJM0

Squares and roots of 21055131720

• 21055131720 squared (21055131720²) is 443318571746550158400
• 21055131720 cubed (21055131720³) is 9334130922045884040698864448000
• The square root of 21055131720 is 145103.8652827691
• The cube root of 21055131720 is 2761.3364195805

Scales and comparisons

• 21,055,131,720 seconds is equal to 669 years, 25 weeks, 2 days, 15 hours, 42 minutes.
• To count from 1 to 21,055,131,720 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 21055131720 cubic inches would be around 230.1 feet tall.

Recreational maths with 21055131720

• 21055131720 backwards is 02713155012
• The number of decimal digits it has is: 11
• The sum of 21055131720's digits is 27
• More coming soon!