21989540664

Names of 21989540664

• Cardinal: 21989540664 can be written as Twenty-one billion, nine hundred eighty-nine million, five hundred forty thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1989540664 × 10¹⁰

Factors of 21989540664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 121

Divisors of 21989540664

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 17 18 21 24 26 27 28 34 36 39 42 49 51 52 54 56 63 68 72 78 79 84 91 98 102 104 108 117 119 126 136 147 153 156 158 168 182 189 196 204 216 221 234 237 238 252 273 289 294 306 312 316 343 351 357 364 378 392 408 441 442 459 468 474 476 504 546 553 578 588 612 632 637 663 686 702 711 714 728 756 819 833 867 882 884 918 936 948 952 1027 1029 1071 1092 1106 1156 1176 1224 1274 1323 1326 1343 1372 1404 1422 1428 1512 1547 1638 1659 1666 1734 1764 1768 1836 1896 1911 1989 2023 2054 2058 2133 2142 2184 2212 2312 2457 2499 2548 2601 2646 2652 2686 2744 2808 2844 2856 3081 3087 3094 3213 3276 3318 3332 3468 3528 3672 3757 3822 3871 3978 4029 4046 4108 4116 4266 4284 4424 4459 4641 4914 4977 4998 5096 5202 5292 5304 5372 5688 5733 5831 5967 6069 6162 6174 6188 6426 6552 6636 6664 6936 7189 7497 7514 7644 7742 7803 7956 8058 8092 8216 8232 8532 8568 8918 9243 9261 9282 9401 9828 9954 9996 10404 10584 10744 10829 11271 11466 11613 11662 11934 12087 12138 12324 12348 12376 12852 13272 13377 13923 14161 14378 14931 14994 15028 15288 15484 15606 15912 16116 16184 17064 17199 17459 17493 17836 18207 18486 18522 18564 18802 19656 19908 19992 20808 21567 21658 22491 22542 22831 22932 23226 23324 23868 24174 24276 24648 24696 25704 26299 26754 27097 27729 27846 28203 28322 28756 29862 29988 30056 30968 31212 32232 32487 33813 34398 34839 34918 34986 35672 36261 36414 36972 37044 37128 37604 39816 40131 41769 42483 43134 43316 44982 45084 45662 45864 46452 46648 47736 48348 48552 50323 52377 52479 52598 53508 54194 54621 55458 55692 56406 56644 57512 59724 59976 62424 64701 64974 65807 67626 68493 68796 69678 69836 69972 72522 72828 73944 74088 75208 75803 78897 80262 81291 83538 84609 84966 86268 86632 89964 90168 91324 92904 96696 97461 99127 100646 101439 104517 104754 104958 105196 107016 108388 109242 110916 111384 112812 113288 119448 120393 122213 127449 129402 129948 131614 135252 136986 137592 139356 139672 139944 145044 145656 150969 151606 157131 157437 157794 159817 160524 162582 167076 169218 169932 172536 179928 182648 184093 194103 194922 197421 198254 201292 202878 205479 209034 209508 209916 210392 216776 218484 221832 225624 227409 236691 240786 243873 244426 253827 254898 258804 259896 263228 270504 273972 278712 290088 292383 296803 297381 301938 303212 314262 314874 315588 319634 321048 325164 334152 338436 339864 352261 366639 368186 382347 388206 389844 394842 396508 402584 405756 410958 418068 419016 419832 436968 452907 454818 460649 471393 473382 479451 481572 487746 488852 507654 509796 517608 526456 547944 552279 584766 592263 593606 594762 603876 606424 616437 628524 629748 631176 639268 650328 676872 682227 704522 710073 731619 733278 736372 764694 776412 779688 789684 793016 811512 821916 836136 855491 890409 892143 905814 909636 921298 942786 946764 958902 963144 975492 977704 1015308 1019592 1056783 1099917 1104558 1118719 1169532 1184526 1187212 1189524 1207752 1232874 1257048 1259496 1278536 1288651 1358721 1364454 1381947 1409044 1420146 1438353 1463238 1466556 1472744 1529388 1552824 1579368 1643832 1656837 1710982 1776789 1780818 1784286 1811628 1819272 1842596 1885572 1893528 1917804 1950984 2030616 2046681 2077621 2113566 2199834 2209116 2237438 2339064 2369052 2374424 2379048 2465748 2566473 2577302 2671227 2676429 2717442 2728908 2763894 2818088 2840292 2876706 2926476 2933112 3058776 3170349 3299751 3313674 3356157 3421964 3553578 3561636 3568572 3623256 3685192 3771144 3835608 3865953 4093362 4145841 4155242 4227132 4315059 4399668 4418232 4474876 4738104 4931496 4970511 5132946 5154604 5342454 5352858 5434884 5457816 5527788 5680584 5753412 5852952 5988437 6232863 6340698 6599502 6627348 6712314 6843928 7107156 7123272 7137144 7699419 7731906 7831033 8013681 8186724 8291682 8310484 8454264 8630118 8799336 8949752 9511047 9941022 10068471 10265892 10309208 10684908 10705716 10869768 11055576 11506824 11597859 11976874 12437523 12465726 12681396 13199004 13254696 13424628 14214312 14543347 15398838 15463812 15662066 16027362 16373448 16583364 16620968 17260236 17965311 18698589 19022094 19882044 20136942 20531784 21369816 21411432 23098257 23195718 23493099 23953748 24875046 24931452 25362792 26398008 26849256 29086694 30205413 30797676 30927624 31324132 32054724 33166728 34520472 34793577 35930622 37397178 38044188 39764088 40273884 43630041 46196514 46391436 46986198 47907496 49750092 49862904 53895933 56095767 58173388 60410826 61595352 62648264 64109448 69587154 70479297 71861244 74794356 76088376 80547768 87260082 92393028 92782872 93972396 99500184 101803429 107791866 112191534 116346776 120821652 130890123 139174308 140958594 143722488 149588712 161687799 174520164 184786056 187944792 203606858 211437891 215583732 224383068 241643304 261780246 278348616 281917188 305410287 323375598 349040328 392670369 407213716 422875782 431167464 448766136 523560492 563834376 610820574 646751196 785340738 814427432 845751564 916230861 1047120984 1221641148 1293502392 1570681476 1691503128 1832461722 2443282296 2748692583 3141362952 3664923444 5497385166 7329846888 10994770332 21989540664
• Sum of all divisors σ(n): 82521600000
• Sum of proper divisors (its aliquot sum) s(n): 60532059336
• 21989540664 is an abundant number, because the sum of its proper divisors (60532059336) is greater than itself. Its abundance is 38542518672

Bases of 21989540664

• Binary: 10100011110101011011100001100111000₂
• Hexadecimal: 0x51EADC338
• Base-36: A3O0660

Squares and roots of 21989540664

• 21989540664 squared (21989540664²) is 483539898613709560896
• 21989540664 cubed (21989540664³) is 10632820263232603617208176274944
• The square root of 21989540664 is 148288.7071357763
• The cube root of 21989540664 is 2801.5952076771

Scales and comparisons

• 21,989,540,664 seconds is equal to 699 years, 10 weeks, 2 days, 13 hours, 44 minutes, 24 seconds.
• To count from 1 to 21,989,540,664 would take you about one thousand, three hundred ninety-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 21989540664 cubic inches would be around 233.5 feet tall.

Recreational maths with 21989540664

• 21989540664 backwards is 46604598912
• 21989540664 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21989540664's digits is 54
• More coming soon!