21381431456
21,381,431,456 is an even composite number composed of six prime numbers multiplied together.
21381431456 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21381431456:
25 × 72 × 11 × 43 × 127 × 227
(2 × 2 × 2 × 2 × 2 × 7 × 7 × 11 × 43 × 127 × 227)See below for interesting mathematical facts about the number 21381431456 from the Numbermatics database.
Names of 21381431456
- Cardinal: 21381431456 can be written as Twenty-one billion, three hundred eighty-one million, four hundred thirty-one thousand, four hundred fifty-six.
Scientific notation
- Scientific notation: 2.1381431456 × 1010
Factors of 21381431456
Divisors of 21381431456
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 7 8 11 14 16 22 28 32 43 44 49 56 77 86 88 98 112 127 154 172 176 196 224 227 254 301 308 344 352 392 454 473 508 539 602 616 688 784 889 908 946 1016 1078 1204 1232 1376 1397 1568 1589 1778 1816 1892 2032 2107 2156 2408 2464 2497 2794 3178 3311 3556 3632 3784 4064 4214 4312 4816 4994 5461 5588 6223 6356 6622 7112 7264 7568 8428 8624 9632 9761 9779 9988 10922 11123 11176 12446 12712 13244 14224 15136 16856 17248 17479 19522 19558 19976 21844 22246 22352 23177 24892 25424 26488 28448 28829 33712 34958 38227 39044 39116 39952 43688 44492 44704 46354 49784 50848 52976 57658 60071 67424 68327 68453 69916 76454 78088 78232 79904 87376 88984 92708 99568 105952 107371 115316 120142 122353 136654 136906 139832 152908 156176 156464 174752 177968 185416 199136 201803 214742 230632 240284 244706 267589 273308 273812 279664 305816 312352 312928 317119 355936 370832 403606 420497 429484 461264 478289 480568 489412 535178 546616 547624 559328 611632 634238 741664 751597 807212 840994 858968 922528 956578 961136 978824 1070356 1093232 1095248 1223264 1239647 1268476 1412621 1503194 1614424 1681988 1717936 1913156 1922272 1957648 2140712 2186464 2190496 2219833 2479294 2536952 2825242 2943479 3006388 3228848 3363976 3435872 3826312 3915296 4281424 4439666 4958588 5073904 5261179 5650484 5886958 6012776 6457696 6727952 7652624 8562848 8677529 8879332 9917176 10147808 10522358 11300968 11773916 12025552 13455904 13636117 15305248 15538831 17355058 17758664 19834352 21044716 22601936 23547832 24051104 27272234 31077662 34710116 35517328 39668704 42089432 45203872 47095664 54544468 60742703 62155324 69420232 71034656 84178864 94191328 95452819 109088936 121485406 124310648 138840464 168357728 190905638 218177872 242970812 248621296 277680928 381811276 436355744 485941624 497242592 668169733 763622552 971883248 1336339466 1527245104 1943766496 2672678932 3054490208 5345357864 10690715728 21381431456
- Sum of all divisors σ(n): 55334264832
- Sum of proper divisors (its aliquot sum) s(n): 33952833376
- 21381431456 is an abundant number, because the sum of its proper divisors (33952833376) is greater than itself. Its abundance is 12571401920
Bases of 21381431456
- Binary: 100111110100110111011000000101000002
- Hexadecimal: 0x4FA6EC0A0
- Base-36: 9TLYA3K
Squares and roots of 21381431456
- 21381431456 squared (213814314562) is 457165611107626279936
- 21381431456 cubed (213814314563) is 9774855177938063543315852066816
-
The
square root of 21381431456 is 146223.9086333011 -
The
cube root of 21381431456 is 2775.5278688907
Scales and comparisons
How big is 21381431456?- 21,381,431,456 seconds is equal to 679 years, 44 weeks, 6 days, 6 hours, 30 minutes, 56 seconds.
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To count from 1 to 21,381,431,456 would take you about one thousand, three hundred fifty-nine 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 21381431456 cubic inches would be around 231.3 feet tall.
Recreational maths with 21381431456
- 21381431456 backwards is 65413418312
- The number of decimal digits it has is: 11
- The sum of 21381431456's digits is 38
- More coming soon!
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