21228664320

Names of 21228664320

• Cardinal: 21228664320 can be written as Twenty-one billion, two hundred twenty-eight million, six hundred sixty-four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.122866432 × 10¹⁰

Factors of 21228664320

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 763

Divisors of 21228664320

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 30 32 34 36 40 45 48 51 60 64 68 72 80 83 85 90 96 102 120 128 136 144 153 160 166 170 180 192 204 240 249 255 256 272 288 306 320 332 340 360 384 408 415 480 498 510 512 544 576 612 640 653 664 680 720 747 765 768 816 830 960 996 1020 1088 1152 1224 1245 1280 1306 1328 1360 1411 1440 1494 1530 1536 1632 1660 1920 1959 1992 2040 2176 2304 2448 2490 2560 2612 2656 2720 2822 2880 2988 3060 3264 3265 3320 3735 3840 3918 3984 4080 4233 4352 4608 4896 4980 5224 5312 5440 5644 5760 5877 5976 6120 6528 6530 6640 7055 7470 7680 7836 7968 8160 8466 8704 9792 9795 9960 10448 10624 10880 11101 11288 11520 11754 11952 12240 12699 13056 13060 13280 14110 14940 15672 15936 16320 16932 19584 19590 19920 20896 21165 21248 21760 22202 22576 23040 23508 23904 24480 25398 26112 26120 26560 28220 29385 29880 31344 31872 32640 33303 33864 39168 39180 39840 41792 42330 42496 43520 44404 45152 47016 47808 48960 50796 52240 53120 54199 55505 56440 58770 59760 62688 63495 63744 65280 66606 67728 78336 78360 79680 83584 84660 88808 90304 94032 95616 97920 99909 101592 104480 106240 108398 111010 112880 117540 119520 125376 126990 127488 130560 133212 135456 156720 159360 162597 166515 167168 169320 177616 180608 188064 191232 195840 199818 203184 208960 212480 216796 222020 225760 235080 239040 250752 253980 266424 270912 270995 313440 318720 325194 333030 334336 338640 355232 361216 376128 382464 391680 399636 406368 417920 433592 444040 451520 470160 478080 487791 499545 501504 507960 532848 541824 541990 626880 637440 650388 666060 677280 710464 722432 752256 799272 812736 812985 835840 867184 888080 903040 921383 940320 956160 975582 999090 1003008 1015920 1065696 1083648 1083980 1253760 1300776 1332120 1354560 1420928 1504512 1598544 1625472 1625970 1671680 1734368 1776160 1806080 1842766 1880640 1912320 1951164 1998180 2031840 2131392 2167296 2167960 2438955 2507520 2601552 2664240 2709120 2764149 2841856 3009024 3197088 3250944 3251940 3468736 3552320 3612160 3685532 3761280 3902328 3996360 4063680 4262784 4335920 4606915 4877910 5015040 5203104 5328480 5418240 5528298 5683712 6394176 6501888 6503880 6937472 7104640 7371064 7522560 7804656 7992720 8127360 8292447 8525568 8671840 9213830 9755820 10406208 10656960 10836480 11056596 12788352 13007760 13820745 13874944 14209280 14742128 15045120 15609312 15985440 16254720 16584894 17051136 17343680 18427660 19511640 20812416 21313920 22113192 25576704 26015520 27641490 27749888 28418560 29484256 31218624 31970880 32509440 33169788 34687360 36855320 39023280 41462235 41624832 42627840 44226384 51153408 52031040 55282980 58968512 62437248 63941760 66339576 69374720 73710640 78046560 82924470 83249664 85255680 88452768 104062080 110565960 117937024 124874496 127883520 132679152 138749440 147421280 156093120 165848940 176905536 208124160 221131920 235874048 249748992 255767040 265358304 294842560 312186240 331697880 353811072 416248320 442263840 471748096 530716608 589685120 624372480 663395760 707622144 884527680 1061433216 1179370240 1248744960 1326791520 1415244288 1769055360 2122866432 2358740480 2653583040 3538110720 4245732864 5307166080 7076221440 10614332160 21228664320
• Sum of all divisors σ(n): 78904137312
• Sum of proper divisors (its aliquot sum) s(n): 57675472992
• 21228664320 is an abundant number, because the sum of its proper divisors (57675472992) is greater than itself. Its abundance is 36446808672

Bases of 21228664320

• Binary: 10011110001010100111011011000000000₂
• Hexadecimal: 0x4F153B600
• Base-36: 9R2ZY80

Squares and roots of 21228664320

• 21228664320 squared (21228664320²) is 450656188811241062400
• 21228664320 cubed (21228664320³) is 9566828956004376356289773568000
• The square root of 21228664320 is 145700.5982142833
• The cube root of 21228664320 is 2768.9018189321

Scales and comparisons

• 21,228,664,320 seconds is equal to 675 years, 2 days, 3 hours, 12 minutes.
• To count from 1 to 21,228,664,320 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 21228664320 cubic inches would be around 230.7 feet tall.

Recreational maths with 21228664320

• 21228664320 backwards is 02346682212
• 21228664320 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21228664320's digits is 36
• More coming soon!