21358439872
21,358,439,872 is an even composite number composed of five prime numbers multiplied together.
21358439872 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of four hundred forty-eight divisors.
Prime factorization of 21358439872:
26 × 73 × 113 × 17 × 43
(2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 7 × 11 × 11 × 11 × 17 × 43)See below for interesting mathematical facts about the number 21358439872 from the Numbermatics database.
Names of 21358439872
- Cardinal: 21358439872 can be written as Twenty-one billion, three hundred fifty-eight million, four hundred thirty-nine thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 2.1358439872 × 1010
Factors of 21358439872
Divisors of 21358439872
- Number of divisors d(n): 448
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Complete list of divisors:
1 2 4 7 8 11 14 16 17 22 28 32 34 43 44 49 56 64 68 77 86 88 98 112 119 121 136 154 172 176 187 196 224 238 242 272 301 308 343 344 352 374 392 448 473 476 484 539 544 602 616 686 688 704 731 748 784 833 847 946 952 968 1078 1088 1204 1232 1309 1331 1372 1376 1462 1496 1568 1666 1694 1892 1904 1936 2057 2107 2156 2408 2464 2618 2662 2744 2752 2924 2992 3136 3311 3332 3388 3773 3784 3808 3872 4114 4214 4312 4816 4928 5117 5203 5236 5324 5488 5831 5848 5929 5984 6622 6664 6776 7546 7568 7616 7744 8041 8228 8428 8624 9163 9317 9632 10234 10406 10472 10648 10976 11662 11696 11858 11968 13244 13328 13552 14399 14749 15092 15136 16082 16456 16856 17248 18326 18634 19264 20468 20812 20944 21296 21952 22627 23177 23324 23392 23716 26488 26656 27104 28798 29498 30184 30272 32164 32912 33712 34496 35819 36421 36652 37268 40936 41503 41624 41888 42592 45254 46354 46648 46784 47432 52976 53312 54208 56287 57233 57596 58996 60368 64141 64328 65219 65824 67424 71638 72842 73304 74536 81872 83006 83248 83776 85184 88451 90508 92708 93296 94864 100793 105952 112574 114466 115192 117992 120736 128282 128656 130438 131648 134848 143276 145684 146608 149072 158389 162239 163744 166012 166496 176902 181016 185416 186592 189728 201586 211904 225148 228932 230384 235984 241472 250733 254947 256564 257312 260876 286552 291368 293216 298144 316778 324478 327488 332024 332992 353804 362032 370832 373184 379456 394009 400631 403172 450296 456533 457864 460768 471968 501466 509894 513128 514624 521752 573104 582736 586432 596288 619157 633556 648956 664048 705551 707608 724064 741664 788018 801262 806344 900592 913066 915728 921536 943936 972961 1002932 1019788 1026256 1043504 1108723 1146208 1165472 1238314 1267112 1297912 1328096 1411102 1415216 1448128 1483328 1576036 1602524 1612688 1784629 1801184 1826132 1831456 1945922 2005864 2039576 2052512 2087008 2217446 2292416 2330944 2476628 2534224 2595824 2656192 2758063 2804417 2822204 2830432 3152072 3205048 3225376 3569258 3602368 3652264 3662912 3891844 4011728 4079152 4105024 4174016 4334099 4434892 4953256 5068448 5191648 5516126 5608834 5644408 5660864 6304144 6410096 6450752 6810727 7138516 7304528 7761061 7783688 8023456 8158304 8668198 8869784 9906512 10136896 10383296 11032252 11217668 11288816 12608288 12820192 13621454 14277032 14609056 15522122 15567376 16046912 16316608 17336396 17739568 19630919 19813024 22064504 22435336 22577632 25216576 25640384 27242908 28554064 29218112 30338693 31044244 31134752 34672792 35479136 39261838 39626048 44129008 44870672 45155264 47675089 54485816 57108128 60677386 62088488 62269504 69345584 70958272 78523676 88258016 89741344 95350178 108971632 114216256 121354772 124176976 138691168 157047352 176516032 179482688 190700356 217943264 242709544 248353952 277382336 314094704 333725623 381400712 435886528 485419088 496707904 628189408 667451246 762801424 970838176 1256378816 1334902492 1525602848 1941676352 2669804984 3051205696 5339609968 10679219936 21358439872
- Sum of all divisors σ(n): 58901990400
- Sum of proper divisors (its aliquot sum) s(n): 37543550528
- 21358439872 is an abundant number, because the sum of its proper divisors (37543550528) is greater than itself. Its abundance is 16185110656
Bases of 21358439872
- Binary: 100111110010000111111101101110000002
- Hexadecimal: 0x4F90FEDC0
- Base-36: 9T89HOG
Squares and roots of 21358439872
- 21358439872 squared (213584398722) is 456182953765839376384
- 21358439872 cubed (213584398723) is 9743356188639036288107640782848
-
The
square root of 21358439872 is 146145.2697558153 -
The
cube root of 21358439872 is 2774.5326647253
Scales and comparisons
How big is 21358439872?- 21,358,439,872 seconds is equal to 679 years, 6 weeks, 6 days, 3 hours, 57 minutes, 52 seconds.
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To count from 1 to 21,358,439,872 would take you about one thousand, three hundred fifty-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 21358439872 cubic inches would be around 231.2 feet tall.
Recreational maths with 21358439872
- 21358439872 backwards is 27893485312
- The number of decimal digits it has is: 11
- The sum of 21358439872's digits is 52
- More coming soon!
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