21085982720
21,085,982,720 is an even composite number composed of five prime numbers multiplied together.
21085982720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred twelve divisors.
Prime factorization of 21085982720:
212 × 5 × 112 × 67 × 127
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 11 × 67 × 127)See below for interesting mathematical facts about the number 21085982720 from the Numbermatics database.
Names of 21085982720
- Cardinal: 21085982720 can be written as Twenty-one billion, eighty-five million, nine hundred eighty-two thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.108598272 × 1010
Factors of 21085982720
Divisors of 21085982720
- Number of divisors d(n): 312
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Complete list of divisors:
1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 67 80 88 110 121 127 128 134 160 176 220 242 254 256 268 320 335 352 440 484 508 512 536 605 635 640 670 704 737 880 968 1016 1024 1072 1210 1270 1280 1340 1397 1408 1474 1760 1936 2032 2048 2144 2420 2540 2560 2680 2794 2816 2948 3520 3685 3872 4064 4096 4288 4840 5080 5120 5360 5588 5632 5896 6985 7040 7370 7744 8107 8128 8509 8576 9680 10160 10240 10720 11176 11264 11792 13970 14080 14740 15367 15488 16214 16256 17018 17152 19360 20320 20480 21440 22352 22528 23584 27940 28160 29480 30734 30976 32428 32512 34036 34304 38720 40535 40640 42545 42880 44704 45056 47168 55880 56320 58960 61468 61952 64856 65024 68072 68608 76835 77440 81070 81280 85090 85760 89408 93599 94336 111760 112640 117920 122936 123904 129712 130048 136144 137216 153670 154880 162140 162560 170180 171520 178816 187198 188672 223520 225280 235840 245872 247808 259424 260096 272288 274432 307340 309760 324280 325120 340360 343040 357632 374396 377344 447040 467995 471680 491744 495616 518848 520192 544576 614680 619520 648560 650240 680720 686080 715264 748792 754688 894080 935990 943360 983488 1029589 1037696 1089152 1229360 1239040 1297120 1300480 1361440 1372160 1430528 1497584 1509376 1788160 1871980 1886720 1966976 2059178 2075392 2178304 2458720 2478080 2594240 2600960 2722880 2861056 2995168 3018752 3576320 3743960 3773440 3933952 4118356 4150784 4356608 4917440 5147945 5188480 5445760 5722112 5990336 7152640 7487920 7546880 7867904 8236712 8301568 8713216 9834880 10295890 10376960 10891520 11980672 14305280 14975840 15093760 15735808 16473424 16603136 17426432 19669760 20591780 20753920 21783040 23961344 28610560 29951680 31471616 32946848 33206272 34852864 39339520 41183560 41507840 43566080 47922688 59903360 62943232 65893696 78679040 82367120 83015680 87132160 95845376 119806720 131787392 157358080 164734240 166031360 174264320 191690752 239613440 263574784 314716160 329468480 383381504 479226880 527149568 658936960 958453760 1054299136 1317873920 1916907520 2108598272 2635747840 4217196544 5271495680 10542991360 21085982720
- Sum of all divisors σ(n): 56892982272
- Sum of proper divisors (its aliquot sum) s(n): 35806999552
- 21085982720 is an abundant number, because the sum of its proper divisors (35806999552) is greater than itself. Its abundance is 14721016832
Bases of 21085982720
- Binary: 100111010001101001010010000000000002
- Hexadecimal: 0x4E8D29000
- Base-36: 9OQ1SE8
Squares and roots of 21085982720
- 21085982720 squared (210859827202) is 444618667268138598400
- 21085982720 cubed (210859827203) is 9375221535005400092427419648000
-
The
square root of 21085982720 is 145210.1329797615 -
The
cube root of 21085982720 is 2762.6844427399
Scales and comparisons
How big is 21085982720?- 21,085,982,720 seconds is equal to 670 years, 24 weeks, 2 days, 17 hours, 25 minutes, 20 seconds.
-
To count from 1 to 21,085,982,720 would take you about one thousand, three hundred forty 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 21085982720 cubic inches would be around 230.2 feet tall.
Recreational maths with 21085982720
- 21085982720 backwards is 02728958012
- 21085982720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21085982720's digits is 44
- More coming soon!
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