21657871872

Names of 21657871872

• Cardinal: 21657871872 can be written as Twenty-one billion, six hundred fifty-seven million, eight hundred seventy-one thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 2.1657871872 × 10¹⁰

Factors of 21657871872

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 191

Divisors of 21657871872

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 29 32 36 39 42 48 52 56 58 63 64 72 78 84 87 91 96 104 112 116 117 126 128 137 144 156 168 169 174 182 192 203 208 224 232 234 252 256 261 273 274 288 312 336 338 348 364 377 384 406 411 416 448 464 468 504 507 512 522 546 548 576 609 624 672 676 696 728 754 768 812 819 822 832 896 928 936 959 1008 1014 1044 1092 1096 1131 1152 1183 1218 1233 1248 1344 1352 1392 1456 1508 1521 1536 1624 1638 1644 1664 1781 1792 1827 1856 1872 1918 2016 2028 2088 2184 2192 2262 2304 2366 2436 2466 2496 2639 2688 2704 2784 2877 2912 3016 3042 3248 3276 3288 3328 3393 3549 3562 3584 3654 3712 3744 3836 3973 4032 4056 4176 4368 4384 4524 4608 4732 4872 4901 4932 4992 5278 5343 5376 5408 5568 5754 5824 6032 6084 6496 6552 6576 6656 6786 7098 7124 7308 7424 7488 7672 7917 7946 8064 8112 8352 8631 8736 8768 9048 9464 9744 9802 9864 9984 10556 10647 10686 10752 10816 11136 11508 11648 11919 12064 12168 12467 12992 13104 13152 13572 14196 14248 14616 14703 14848 14976 15344 15834 15892 16029 16128 16224 16704 17262 17472 17536 18096 18928 19488 19604 19728 19968 21112 21294 21372 21632 22272 23016 23153 23296 23751 23838 24128 24336 24934 25984 26208 26304 27144 27811 28392 28496 29232 29406 29952 30688 31668 31784 32058 32256 32448 33408 34307 34524 34944 35072 35757 36192 37401 37856 38976 39208 39456 42224 42588 42744 43264 44109 44544 46032 46306 46592 47502 47676 48256 48672 49868 51649 51968 52416 52608 54288 55622 56784 56992 58464 58812 59904 61376 63336 63568 64116 64896 66816 68614 69048 69459 69888 70144 71514 72384 74802 75712 77952 78416 78912 83433 84448 85176 85488 86528 88218 92064 92612 95004 95352 96512 97344 99736 102921 103298 103936 104832 105216 108576 111244 112203 113568 113984 116928 117624 122752 126672 127136 128232 129792 133632 137228 138096 138918 139776 143028 144768 149604 151424 154947 155904 156832 157824 162071 166866 168896 170352 170976 176436 184128 185224 190008 190704 193024 194688 199472 205842 206596 208377 209664 210432 217152 222488 224406 227136 227968 233856 235248 245504 250299 253344 254272 256464 259584 274456 276192 277836 286056 289536 299208 302848 308763 309894 311808 313664 315648 324142 333732 337792 340704 341952 352872 361543 368256 370448 380016 381408 389376 398944 411684 413192 416754 419328 434304 444976 448812 454272 455936 464841 467712 470496 486213 491008 500598 506688 508544 512928 548912 552384 555672 572112 579072 598416 605696 617526 619788 627328 631296 648284 667464 671437 675584 681408 683904 705744 723086 736512 740896 760032 762816 778752 797888 823368 826384 833508 868608 889952 897624 908544 911872 929682 935424 940992 972426 1001196 1013376 1017088 1025856 1084629 1097824 1104768 1111344 1144224 1196832 1235052 1239576 1254656 1296568 1334928 1342874 1351168 1362816 1367808 1411488 1446172 1458639 1473024 1481792 1520064 1525632 1595776 1646736 1652768 1667016 1737216 1779904 1795248 1817088 1859364 1881984 1944852 2002392 2014311 2026752 2034176 2051712 2169258 2195648 2209536 2222688 2288448 2393664 2470104 2479152 2509312 2593136 2669856 2685748 2725632 2735616 2822976 2892344 2917278 2963584 3040128 3051264 3191552 3253887 3293472 3305536 3334032 3559808 3590496 3718728 3763968 3889704 4004784 4028622 4053504 4103424 4338516 4391296 4419072 4445376 4576896 4700059 4787328 4940208 4958304 5186272 5339712 5371496 5451264 5645952 5784688 5834556 5927168 6042933 6080256 6102528 6383104 6507774 6586944 6611072 6668064 7119616 7180992 7437456 7527936 7779408 8009568 8057244 8206848 8677032 8782592 8890752 9153792 9400118 9574656 9880416 9916608 10372544 10679424 10742992 11291904 11569376 11669112 11854336 12085866 12160512 13015548 13173888 13222144 13336128 14100177 14239232 14361984 14874912 15558816 16019136 16114488 17354064 17565184 17781504 18307584 18800236 19149312 19760832 19833216 20745088 21358848 21485984 22583808 23138752 23338224 24171732 26031096 26347776 26444288 26672256 28200354 28723968 29749824 31117632 32038272 32228976 34708128 35563008 37600472 39521664 39666432 41490176 42300531 42717696 42971968 46277504 46676448 48343464 52062192 52695552 53344512 56400708 57447936 59499648 62235264 64076544 64457952 69416256 75200944 79043328 79332864 82980352 84601062 85943936 92555008 93352896 96686928 104124384 106689024 112801416 118999296 124470528 128153088 128915904 138832512 150401888 158086656 169202124 171887872 185110016 186705792 193373856 208248768 225602832 237998592 248941056 257831808 277665024 300803776 338404248 343775744 373411584 386747712 416497536 451205664 515663616 555330048 601607552 676808496 746823168 773495424 832995072 902411328 1031327232 1203215104 1353616992 1546990848 1665990144 1804822656 2406430208 2707233984 3093981696 3609645312 5414467968 7219290624 10828935936 21657871872
• Sum of all divisors σ(n): 80604707040
• Sum of proper divisors (its aliquot sum) s(n): 58946835168
• 21657871872 is an abundant number, because the sum of its proper divisors (58946835168) is greater than itself. Its abundance is 37288963296

Bases of 21657871872

• Binary: 10100001010111010001110011000000000₂
• Hexadecimal: 0x50AE8E600
• Base-36: 9Y6JCW0

Squares and roots of 21657871872

• 21657871872 squared (21657871872²) is 469063414023968784384
• 21657871872 cubed (21657871872³) is 10158915320774003869116266446848
• The square root of 21657871872 is 147166.1369745091
• The cube root of 21657871872 is 2787.4382806609

Scales and comparisons

• 21,657,871,872 seconds is equal to 688 years, 33 weeks, 6 days, 19 hours, 31 minutes, 12 seconds.
• To count from 1 to 21,657,871,872 would take you about one thousand, three hundred seventy-seven 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 21657871872 cubic inches would be around 232.3 feet tall.

Recreational maths with 21657871872

• 21657871872 backwards is 27817875612
• The number of decimal digits it has is: 11
• The sum of 21657871872's digits is 54
• More coming soon!