21123864216
21,123,864,216 is an even composite number composed of seven prime numbers multiplied together.
21123864216 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21123864216:
23 × 32 × 7 × 13 × 17 × 61 × 3109
(2 × 2 × 2 × 3 × 3 × 7 × 13 × 17 × 61 × 3109)See below for interesting mathematical facts about the number 21123864216 from the Numbermatics database.
Names of 21123864216
- Cardinal: 21123864216 can be written as Twenty-one billion, one hundred twenty-three million, eight hundred sixty-four thousand, two hundred sixteen.
Scientific notation
- Scientific notation: 2.1123864216 × 1010
Factors of 21123864216
Divisors of 21123864216
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 13 14 17 18 21 24 26 28 34 36 39 42 51 52 56 61 63 68 72 78 84 91 102 104 117 119 122 126 136 153 156 168 182 183 204 221 234 238 244 252 273 306 312 357 364 366 408 427 442 468 476 488 504 546 549 612 663 714 728 732 793 819 854 884 936 952 1037 1071 1092 1098 1224 1281 1326 1428 1464 1547 1586 1638 1708 1768 1989 2074 2142 2184 2196 2379 2562 2652 2856 3094 3109 3111 3172 3276 3416 3843 3978 4148 4284 4392 4641 4758 5124 5304 5551 6188 6218 6222 6344 6552 7137 7259 7686 7956 8296 8568 9282 9327 9333 9516 10248 11102 12376 12436 12444 13481 13923 14274 14518 15372 15912 16653 18564 18654 18666 19032 21763 21777 22204 24872 24888 26962 27846 27981 28548 29036 30744 33306 37128 37308 37332 40417 40443 43526 43554 44408 49959 52853 53924 55692 55962 57096 58072 65289 65331 66612 74616 74664 80834 80886 87052 87108 94367 99918 105706 107848 111384 111924 121251 121329 130578 130662 133224 158559 161668 161772 174104 174216 188734 189649 195867 199836 211412 223848 242502 242658 261156 261324 282919 283101 317118 323336 323544 363753 369971 377468 379298 391734 399672 422824 475677 485004 485316 522312 522648 565838 566202 568947 634236 687089 727506 739942 754936 758596 783468 848757 849303 951354 970008 970632 1109913 1131676 1132404 1137894 1268472 1327543 1374178 1455012 1479884 1517192 1566936 1697514 1698606 1706841 1902708 2061267 2219826 2263352 2264808 2275788 2465437 2546271 2655086 2748356 2910024 2959768 3224033 3329739 3395028 3397212 3413682 3805416 3982629 4122534 4439652 4551576 4809623 4930874 5092542 5310172 5496712 6183801 6448066 6659478 6790056 6794424 6827364 7396311 7965258 8245068 8879304 9619246 9672099 9861748 10185084 10620344 11947887 12367602 12896132 13318956 13654728 14428869 14792622 15930516 16490136 17258059 19238492 19344198 19723496 20370168 22188933 22568231 23895774 24735204 25792264 26637912 28857738 29016297 29585244 31861032 34516118 38476984 38688396 41912429 43286607 44377866 45136462 47791548 49470408 51774177 57715476 58032594 59170488 67704693 69032236 77376792 83824858 86573214 88755732 90272924 95583096 103548354 115430952 116065188 125737287 135409386 138064472 155322531 167649716 173146428 177511464 180545848 203114079 207096708 232130376 251474574 270818772 293387003 310645062 335299432 346292856 377211861 406228158 414193416 502949148 541637544 586774006 621290124 754423722 812456316 880161009 1005898296 1173548012 1242580248 1508847444 1624912632 1760322018 2347096024 2640483027 3017694888 3520644036 5280966054 7041288072 10561932108 21123864216
- Sum of all divisors σ(n): 75801398400
- Sum of proper divisors (its aliquot sum) s(n): 54677534184
- 21123864216 is an abundant number, because the sum of its proper divisors (54677534184) is greater than itself. Its abundance is 33553669968
Bases of 21123864216
- Binary: 100111010110001010010010110100110002
- Hexadecimal: 0x4EB149698
- Base-36: 9PCLPY0
Squares and roots of 21123864216
- 21123864216 squared (211238642162) is 446217639416005294656
- 21123864216 cubed (211238642163) is 9425840825807745381450414429696
-
The
square root of 21123864216 is 145340.5112692259 -
The
cube root of 21123864216 is 2764.3378635927
Scales and comparisons
How big is 21123864216?- 21,123,864,216 seconds is equal to 671 years, 35 weeks, 4 hours, 3 minutes, 36 seconds.
-
To count from 1 to 21,123,864,216 would take you about one thousand, three hundred forty-three 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 21123864216 cubic inches would be around 230.4 feet tall.
Recreational maths with 21123864216
- 21123864216 backwards is 61246832112
- 21123864216 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21123864216's digits is 36
- More coming soon!
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