21683906640

Names of 21683906640

• Cardinal: 21683906640 can be written as Twenty-one billion, six hundred eighty-three million, nine hundred six thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.168390664 × 10¹⁰

Factors of 21683906640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 38

Divisors of 21683906640

• Number of divisors d(n): 420
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 17 18 20 22 24 30 33 34 36 40 44 45 48 51 55 60 66 68 72 80 85 88 90 99 102 110 120 121 132 136 144 153 165 170 176 180 187 198 204 220 240 242 255 264 272 306 330 340 360 363 374 396 408 440 484 495 510 528 561 605 612 660 680 720 726 748 765 792 816 880 935 968 990 1020 1089 1122 1210 1224 1320 1331 1360 1452 1496 1530 1584 1683 1815 1870 1936 1980 2040 2057 2178 2244 2420 2448 2640 2662 2805 2904 2992 3060 3366 3630 3740 3960 3993 4080 4114 4356 4488 4840 5324 5445 5610 5808 6120 6171 6655 6732 7260 7480 7920 7986 8228 8415 8712 8976 9680 10285 10648 10890 11220 11979 12240 12342 13310 13464 14520 14641 14960 15972 16456 16830 17424 18513 19965 20570 21296 21780 22440 22627 23958 24684 26620 26928 29040 29282 30855 31944 32912 33660 37026 39930 41140 43560 43923 44880 45254 47916 49368 53240 58564 59895 61710 63888 67320 67881 73205 74052 79860 82280 87120 87846 90508 92565 95832 98736 106480 113135 117128 119790 123420 131769 134640 135762 146410 148104 159720 161051 164560 175692 181016 185130 191664 203643 219615 226270 234256 239580 246840 248897 263538 271524 292820 296208 319440 322102 339405 351384 362032 370260 407286 439230 452540 479160 483153 493680 497794 527076 543048 585640 644204 658845 678810 702768 740520 746691 805255 814572 878460 905080 958320 966306 995588 1018215 1054152 1086096 1171280 1244485 1288408 1317690 1357620 1449459 1481040 1493382 1610510 1629144 1756920 1771561 1810160 1932612 1991176 2036430 2108304 2240073 2415765 2488970 2576816 2635380 2715240 2737867 2898918 2986764 3221020 3258288 3513840 3543122 3733455 3865224 3982352 4072860 4480146 4831530 4977940 5270760 5314683 5430480 5475734 5797836 5973528 6442040 7086244 7247295 7466910 7730448 8145720 8213601 8857805 8960292 9663060 9955880 10541520 10629366 10951468 11200365 11595672 11947056 12884080 13689335 14172488 14494590 14933820 15944049 16291440 16427202 17715610 17920584 19326120 19911760 21258732 21902936 22400730 23191344 24640803 26573415 27378670 28344976 28989180 29867640 30116537 31888098 32854404 35431220 35841168 38652240 41068005 42517464 43805872 44801460 49281606 53146830 54757340 57978360 59735280 60233074 63776196 65708808 70862440 79720245 82136010 85034928 89602920 90349611 98563212 106293660 109514680 115956720 120466148 123204015 127552392 131417616 141724880 150582685 159440490 164272020 179205840 180699222 197126424 212587320 219029360 240932296 246408030 255104784 271048833 301165370 318880980 328544040 361398444 394252848 425174640 451748055 481864592 492816060 542097666 602330740 637761960 657088080 722796888 903496110 985632120 1084195332 1204661480 1275523920 1355244165 1445593776 1806992220 1971264240 2168390664 2409322960 2710488330 3613984440 4336781328 5420976660 7227968880 10841953320 21683906640
• Sum of all divisors σ(n): 84815958708
• Sum of proper divisors (its aliquot sum) s(n): 63132052068
• 21683906640 is an abundant number, because the sum of its proper divisors (63132052068) is greater than itself. Its abundance is 41448145428

Bases of 21683906640

• Binary: 10100001100011101100010100001010000₂
• Hexadecimal: 0x50C762850
• Base-36: 9YM1DG0

Squares and roots of 21683906640

• 21683906640 squared (21683906640²) is 470191807172236089600
• 21683906640 cubed (21683906640³) is 10195595249615649766925074944000
• The square root of 21683906640 is 147254.5640718819
• The cube root of 21683906640 is 2788.5547530769

Scales and comparisons

• 21,683,906,640 seconds is equal to 689 years, 25 weeks, 3 hours, 24 minutes.
• To count from 1 to 21,683,906,640 would take you about one thousand, three hundred seventy-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 21683906640 cubic inches would be around 232.4 feet tall.

Recreational maths with 21683906640

• 21683906640 backwards is 04660938612
• 21683906640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21683906640's digits is 45
• More coming soon!