21087664620

Names of 21087664620

• Cardinal: 21087664620 can be written as Twenty-one billion, eighty-seven million, six hundred sixty-four thousand, six hundred twenty.

Scientific notation

• Scientific notation: 2.108766462 × 10¹⁰

Factors of 21087664620

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2900

Divisors of 21087664620

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 4 5 6 10 11 12 15 17 20 22 30 33 34 44 51 55 60 61 66 68 85 102 110 121 122 132 165 170 183 187 204 220 242 244 255 305 330 340 363 366 374 484 510 561 605 610 660 671 726 732 748 915 935 1020 1037 1122 1210 1220 1342 1452 1815 1830 1870 2013 2057 2074 2244 2420 2684 2801 2805 3111 3355 3630 3660 3740 4026 4114 4148 5185 5602 5610 6171 6222 6710 7260 7381 8052 8228 8403 10065 10285 10370 11204 11220 11407 12342 12444 13420 14005 14762 15555 16806 20130 20570 20740 22143 22814 24684 28010 29524 30811 30855 31110 33612 34221 36905 40260 41140 42015 44286 45628 47617 56020 57035 61622 61710 62220 68442 73810 84030 88572 92433 95234 110715 114070 123244 123420 125477 136884 142851 147620 154055 168060 170861 171105 184866 190468 221430 228140 238085 250954 285702 308110 338921 341722 342210 369732 376431 442860 462165 476170 501908 512583 523787 571404 616220 627385 677842 683444 684420 714255 752862 854305 924330 952340 1016763 1025166 1047574 1254770 1355684 1428510 1505724 1571361 1694605 1708610 1848660 1879471 1882155 2033526 2050332 2095148 2509540 2562915 2618935 2857020 2904637 3142722 3389210 3417220 3758942 3764310 4067052 5083815 5125830 5237870 5638413 5761657 5809274 6285444 6778420 7517884 7528620 7856805 8713911 9397355 10167630 10251660 10475740 11276826 11523314 11618548 14523185 15713610 17284971 17427822 18794710 20335260 20674181 22553652 23046628 28192065 28808285 29046370 31427220 31951007 34569942 34855644 37589420 41348362 43569555 56384130 57616570 58092740 62022543 63902014 69139884 82696724 86424855 87139110 95853021 103370905 112768260 115233140 124045086 127804028 159755035 172849710 174278220 191706042 206741810 248090172 310112715 319510070 345699420 351461077 383412084 413483620 479265105 620225430 639020140 702922154 958530210 1054383231 1240450860 1405844308 1757305385 1917060420 2108766462 3514610770 4217532924 5271916155 7029221540 10543832310 21087664620
• Sum of all divisors σ(n): 69870403008
• Sum of proper divisors (its aliquot sum) s(n): 48782738388
• 21087664620 is an abundant number, because the sum of its proper divisors (48782738388) is greater than itself. Its abundance is 27695073768

Bases of 21087664620

• Binary: 10011101000111011000011100111101100₂
• Hexadecimal: 0x4E8EC39EC
• Base-36: 9OR1U5O

Squares and roots of 21087664620

• 21087664620 squared (21087664620²) is 444689599125599744400
• 21087664620 cubed (21087664620³) is 9377465126362892666264923128000
• The square root of 21087664620 is 145215.9241267981
• The cube root of 21087664620 is 2762.7578949395

Scales and comparisons

• 21,087,664,620 seconds is equal to 670 years, 27 weeks, 1 day, 4 hours, 37 minutes.
• To count from 1 to 21,087,664,620 would take you about one thousand, three hundred forty-one 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 21087664620 cubic inches would be around 230.2 feet tall.

Recreational maths with 21087664620

• 21087664620 backwards is 02646678012
• The number of decimal digits it has is: 11
• The sum of 21087664620's digits is 42
• More coming soon!