21428901648

Names of 21428901648

• Cardinal: 21428901648 can be written as Twenty-one billion, four hundred twenty-eight million, nine hundred one thousand, six hundred forty-eight.

Scientific notation

• Scientific notation: 2.1428901648 × 10¹⁰

Factors of 21428901648

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 840

Divisors of 21428901648

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 23 24 27 28 33 36 37 42 44 46 48 54 56 63 66 69 72 74 77 84 88 92 99 108 111 112 126 132 138 144 148 154 161 168 176 184 189 198 207 216 222 231 252 253 259 264 276 296 297 308 322 333 336 368 378 396 407 414 432 444 462 483 504 506 518 528 552 592 594 616 621 644 666 693 756 757 759 777 792 814 828 851 888 924 966 999 1008 1012 1036 1104 1188 1221 1232 1242 1288 1332 1386 1449 1512 1514 1518 1554 1584 1628 1656 1702 1771 1776 1848 1932 1998 2024 2072 2079 2271 2277 2331 2376 2442 2484 2553 2576 2664 2772 2849 2898 3024 3028 3036 3108 3256 3312 3404 3542 3663 3696 3864 3996 4048 4144 4158 4347 4542 4554 4662 4752 4884 4968 5106 5299 5313 5328 5544 5698 5796 5957 6056 6072 6216 6512 6808 6813 6831 6993 7084 7326 7659 7728 7992 8316 8327 8547 8694 9084 9108 9324 9361 9768 9936 10212 10598 10626 10989 11088 11396 11592 11914 12112 12144 12432 13616 13626 13662 13986 14168 14652 15318 15897 15939 15984 16632 16654 17094 17388 17411 17871 18168 18216 18648 18722 19536 20424 20439 21196 21252 21978 22792 22977 23184 23828 24981 25641 27252 27324 27972 28009 28083 28336 29304 30636 31794 31878 33264 33308 34188 34776 34822 35742 36336 36432 37296 37444 40848 40878 42392 42504 43956 45584 45954 47656 47691 47817 49962 51282 52233 53613 54504 54648 55944 56018 56166 58289 58608 61272 63588 63756 65527 66616 68376 69552 69644 71484 74888 74943 76923 81756 84027 84249 84784 85008 87912 91908 95312 95382 95634 99924 102564 104466 107226 109008 109296 111888 112036 112332 116578 121877 122544 127176 127512 131054 133232 136752 139288 142968 143073 149776 149886 153846 156699 160839 163512 168054 168498 174867 175824 183816 190764 191268 191521 196063 196581 199848 205128 208932 214452 224072 224664 224829 233156 243754 252081 252747 254352 255024 262108 278576 285936 286146 299772 307692 308099 313398 321678 327024 336108 336996 349734 365631 367632 381528 382536 383042 392126 393162 399696 410256 417864 428904 448144 449328 449658 466312 470097 487508 504162 505494 524216 524601 572292 574563 588189 589743 599544 615384 616198 626796 643356 644207 672216 673992 699468 731262 756243 763056 765072 766084 784252 786324 835728 857808 899316 924297 932624 940194 975016 1008324 1010988 1048432 1049202 1096893 1144584 1149126 1176378 1179486 1199088 1230768 1232396 1253592 1286712 1288414 1340647 1344432 1347984 1398936 1462524 1512486 1532168 1568504 1572648 1573803 1723689 1764567 1769229 1798632 1848594 1880388 1932621 1950032 2016648 2021976 2098404 2156693 2193786 2289168 2298252 2352756 2358972 2464792 2507184 2573424 2576828 2681294 2772891 2797872 2925048 3024972 3064336 3137008 3145296 3147606 3290679 3447378 3529134 3538458 3597264 3697188 3760776 3865242 4021941 4033296 4043952 4196808 4313386 4387572 4509449 4596504 4705512 4717944 4929584 5153656 5171067 5293701 5362588 5545782 5797863 5850096 6049944 6295212 6470079 6581358 6894756 7058268 7076916 7086277 7394376 7521552 7730484 8043882 8318673 8393616 8626772 8775144 9018898 9193008 9411024 9435888 10307312 10342134 10587402 10725176 11091564 11595726 12065823 12099888 12590424 12940158 13162716 13528347 13789512 14116536 14153832 14172554 14788752 15460968 16087764 16637346 17253544 17393589 17550288 18037796 19410237 20684268 21174804 21258831 21450352 22183128 23191452 24131646 25180848 25880316 26325432 27056694 27579024 28233072 28307664 28345108 30921936 32175528 33274692 34507088 34787178 36075592 36197469 38820474 40585041 41368536 42349608 42517662 44366256 46382904 48263292 49603939 51760632 52650864 54113388 56690216 58230711 63776493 64351056 66549384 69574356 72151184 72394938 77640948 81170082 82737072 84699216 85035324 92765808 96526584 99207878 103521264 108226776 113380432 116461422 121755123 127552986 133098768 139148712 144789876 148811817 155281896 162340164 170070648 191329479 193053168 198415756 216453552 232922844 243510246 255105972 278297424 289579752 297623634 310563792 324680328 340141296 382658958 396831512 446435451 465845688 487020492 510211944 579159504 595247268 649360656 765317916 793663024 892870902 931691376 974040984 1020423888 1190494536 1339306353 1530635832 1785741804 1948081968 2380989072 2678612706 3061271664 3571483608 5357225412 7142967216 10714450824 21428901648
• Sum of all divisors σ(n): 82291875840
• Sum of proper divisors (its aliquot sum) s(n): 60862974192
• 21428901648 is an abundant number, because the sum of its proper divisors (60862974192) is greater than itself. Its abundance is 39434072544

Bases of 21428901648

• Binary: 10011111101010000110001011100010000₂
• Hexadecimal: 0x4FD431710
• Base-36: 9UE7QC0

Squares and roots of 21428901648

• 21428901648 squared (21428901648²) is 459197825839657115904
• 21428901648 cubed (21428901648³) is 9840105046893445354750152609792
• The square root of 21428901648 is 146386.1388520101
• The cube root of 21428901648 is 2777.5803890195

Scales and comparisons

• 21,428,901,648 seconds is equal to 681 years, 19 weeks, 2 days, 16 hours, 40 minutes, 48 seconds.
• To count from 1 to 21,428,901,648 would take you about one thousand, three hundred sixty-two 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 21428901648 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428901648

• 21428901648 backwards is 84610982412
• The number of decimal digits it has is: 11
• The sum of 21428901648's digits is 45
• More coming soon!