21987984816
21,987,984,816 is an even composite number composed of five prime numbers multiplied together.
21987984816 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21987984816:
24 × 33 × 73 × 179 × 829
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 7 × 7 × 7 × 179 × 829)See below for interesting mathematical facts about the number 21987984816 from the Numbermatics database.
Names of 21987984816
- Cardinal: 21987984816 can be written as Twenty-one billion, nine hundred eighty-seven million, nine hundred eighty-four thousand, eight hundred sixteen.
Scientific notation
- Scientific notation: 2.1987984816 × 1010
Factors of 21987984816
Divisors of 21987984816
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 49 54 56 63 72 84 98 108 112 126 144 147 168 179 189 196 216 252 294 336 343 358 378 392 432 441 504 537 588 686 716 756 784 829 882 1008 1029 1074 1176 1253 1323 1372 1432 1512 1611 1658 1764 2058 2148 2352 2487 2506 2646 2744 2864 3024 3087 3222 3316 3528 3759 4116 4296 4833 4974 5012 5292 5488 5803 6174 6444 6632 7056 7461 7518 8232 8592 8771 9261 9666 9948 10024 10584 11277 11606 12348 12888 13264 14922 15036 16464 17409 17542 18522 19332 19896 20048 21168 22383 22554 23212 24696 25776 26313 29844 30072 33831 34818 35084 37044 38664 39792 40621 44766 45108 46424 49392 52227 52626 59688 60144 61397 67662 69636 70168 74088 77328 78939 81242 89532 90216 92848 104454 105252 119376 121863 122794 135324 139272 140336 148176 148391 156681 157878 162484 179064 180432 184191 208908 210504 236817 243726 245588 270648 278544 284347 296782 313362 315756 324968 358128 365589 368382 417816 421008 445173 473634 487452 491176 541296 552573 568694 593564 626724 631512 649936 731178 736764 835632 853041 890346 947268 974904 982352 1038737 1096767 1105146 1137388 1187128 1253448 1263024 1335519 1462356 1473528 1657719 1706082 1780692 1894536 1949808 2077474 2193534 2210292 2274776 2374256 2506896 2559123 2671038 2924712 2947056 3116211 3315438 3412164 3561384 3789072 4006557 4154948 4387068 4420584 4549552 5118246 5342076 5849424 6232422 6630876 6824328 7122768 7271159 7677369 8013114 8309896 8774136 8841168 9348633 10236492 10684152 12464844 13261752 13648656 14542318 15354738 16026228 16619792 17548272 18697266 20472984 21368304 21813477 24929688 26523504 28045899 29084636 30709476 32052456 37394532 40945968 43626954 49859376 50898113 56091798 58169272 61418952 64104912 65440431 74789064 87253908 101796226 112183596 116338544 122837904 130880862 149578128 152694339 174507816 196321293 203592452 224367192 261761724 305388678 349015632 392642586 407184904 448734384 458083017 523523448 610777356 785285172 814369808 916166034 1047046896 1221554712 1374249051 1570570344 1832332068 2443109424 2748498102 3141140688 3664664136 5496996204 7329328272 10993992408 21987984816
- Sum of all divisors σ(n): 74102400000
- Sum of proper divisors (its aliquot sum) s(n): 52114415184
- 21987984816 is an abundant number, because the sum of its proper divisors (52114415184) is greater than itself. Its abundance is 30126430368
Bases of 21987984816
- Binary: 101000111101001011000000101101100002
- Hexadecimal: 0x51E9605B0
- Base-36: A3N2TO0
Squares and roots of 21987984816
- 21987984816 squared (219879848162) is 483471476268646553856
- 21987984816 cubed (219879848163) is 10630563479164104763056454250496
-
The
square root of 21987984816 is 148283.4610332521 -
The
cube root of 21987984816 is 2801.5291314279
Scales and comparisons
How big is 21987984816?- 21,987,984,816 seconds is equal to 699 years, 7 weeks, 5 days, 13 hours, 33 minutes, 36 seconds.
-
To count from 1 to 21,987,984,816 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 21987984816 cubic inches would be around 233.5 feet tall.
Recreational maths with 21987984816
- 21987984816 backwards is 61848978912
- 21987984816 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21987984816's digits is 63
- More coming soon!
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