21231042768

Names of 21231042768

• Cardinal: 21231042768 can be written as Twenty-one billion, two hundred thirty-one million, forty-two thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1231042768 × 10¹⁰

Factors of 21231042768

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 581

Divisors of 21231042768

• Number of divisors d(n): 360
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 23 24 26 36 39 46 48 52 69 72 78 83 92 104 117 138 144 156 166 169 184 207 208 234 249 276 299 312 332 338 368 414 457 468 498 507 552 598 624 664 676 747 828 897 914 936 996 1014 1079 1104 1196 1328 1352 1371 1494 1521 1656 1794 1828 1872 1909 1992 2028 2158 2392 2691 2704 2742 2988 3042 3237 3312 3588 3656 3818 3887 3984 4056 4113 4316 4784 5382 5484 5727 5941 5976 6084 6474 7176 7312 7636 7774 8112 8226 8632 9711 10511 10764 10968 11454 11661 11882 11952 12168 12948 14027 14352 15272 15548 16452 17181 17264 17823 19422 21022 21528 21936 22908 23322 23764 24336 24817 25896 28054 30544 31096 31533 32904 34362 34983 35646 37931 38844 42044 42081 43056 45816 46644 47528 49634 51792 53469 56108 62192 63066 65808 68724 69966 71292 74451 75862 77233 77688 84088 84162 91632 93288 94599 95056 99268 106938 112216 113793 126132 126243 136643 137448 139932 142584 148902 151724 154466 155376 168176 168324 186576 189198 198536 213876 223353 224432 227586 231699 252264 252486 273286 274896 279864 285168 297804 303448 308932 322621 336648 341379 378396 397072 409929 427752 446706 455172 463398 493103 504528 504972 546572 559728 595608 606896 617864 645242 673296 682758 695097 756792 819858 855504 872413 893412 910344 926796 967863 986206 1009944 1093144 1191216 1229787 1235728 1290484 1365516 1390194 1479309 1513584 1639716 1744826 1776359 1786824 1820688 1853592 1935726 1972412 2019888 2186288 2459574 2580968 2617239 2731032 2780388 2903589 2958618 3279432 3489652 3552718 3573648 3707184 3871452 3944824 4437927 4919148 5161936 5234478 5329077 5462064 5560776 5807178 5917236 6410339 6558864 6979304 7105436 7742904 7851717 7889648 8875854 9838296 10468956 10658154 11121552 11341369 11614356 11834472 12820678 13958608 14210872 15485808 15703434 15987231 17751708 19231017 19676592 20937912 21316308 22682738 23228712 23668944 25641356 28421744 31406868 31974462 34024107 35503416 38462034 41875824 42632616 45365476 46457424 51282712 57693051 62813736 63948924 68048214 71006832 76924068 85265232 90730952 102072321 102565424 115386102 125627472 127897848 136096428 147437797 153848136 181461904 204144642 230772204 255795696 272192856 294875594 307696272 408289284 442313391 461544408 544385712 589751188 816578568 884626782 923088816 1179502376 1326940173 1633157136 1769253564 2359004752 2653880346 3538507128 5307760692 7077014256 10615521384 21231042768
• Sum of all divisors σ(n): 68094516672
• Sum of proper divisors (its aliquot sum) s(n): 46863473904
• 21231042768 is an abundant number, because the sum of its proper divisors (46863473904) is greater than itself. Its abundance is 25632431136

Bases of 21231042768

• Binary: 10011110001011110000000000011010000₂
• Hexadecimal: 0x4F17800D0
• Base-36: 9R4EXG0

Squares and roots of 21231042768

• 21231042768 squared (21231042768²) is 450757177016645101824
• 21231042768 cubed (21231042768³) is 9570044903223338804703058808832
• The square root of 21231042768 is 145708.7600935509
• The cube root of 21231042768 is 2769.0052238213

Scales and comparisons

• 21,231,042,768 seconds is equal to 675 years, 4 weeks, 1 day, 15 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,231,042,768 would take you about one thousand, three hundred fifty 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 21231042768 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231042768

• 21231042768 backwards is 86724013212
• 21231042768 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21231042768's digits is 36
• More coming soon!