21013255872
21,013,255,872 is an even composite number composed of four prime numbers multiplied together.
21013255872 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred eighty divisors.
Prime factorization of 21013255872:
26 × 39 × 7 × 2383
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 7 × 2383)See below for interesting mathematical facts about the number 21013255872 from the Numbermatics database.
Names of 21013255872
- Cardinal: 21013255872 can be written as Twenty-one billion, thirteen million, two hundred fifty-five thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 2.1013255872 × 1010
Factors of 21013255872
Divisors of 21013255872
- Number of divisors d(n): 280
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 64 72 81 84 96 108 112 126 144 162 168 189 192 216 224 243 252 288 324 336 378 432 448 486 504 567 576 648 672 729 756 864 972 1008 1134 1296 1344 1458 1512 1701 1728 1944 2016 2187 2268 2383 2592 2916 3024 3402 3888 4032 4374 4536 4766 5103 5184 5832 6048 6561 6804 7149 7776 8748 9072 9532 10206 11664 12096 13122 13608 14298 15309 15552 16681 17496 18144 19064 19683 20412 21447 23328 26244 27216 28596 30618 33362 34992 36288 38128 39366 40824 42894 45927 46656 50043 52488 54432 57192 61236 64341 66724 69984 76256 78732 81648 85788 91854 100086 104976 108864 114384 122472 128682 133448 137781 139968 150129 152512 157464 163296 171576 183708 193023 200172 209952 228768 244944 257364 266896 275562 300258 314928 326592 343152 367416 386046 400344 419904 450387 457536 489888 514728 533792 551124 579069 600516 629856 686304 734832 772092 800688 900774 979776 1029456 1067584 1102248 1158138 1201032 1259712 1351161 1372608 1469664 1544184 1601376 1737207 1801548 2058912 2204496 2316276 2402064 2702322 2939328 3088368 3202752 3474414 3603096 4053483 4117824 4408992 4632552 4804128 5211621 5404644 6176736 6948828 7206192 8106966 8817984 9265104 9608256 10423242 10809288 12160449 12353472 13897656 14412384 15634863 16213932 18530208 20846484 21618576 24320898 27795312 28824768 31269726 32427864 36481347 37060416 41692968 43237152 46904589 48641796 55590624 62539452 64855728 72962694 83385936 86474304 93809178 97283592 109444041 111181248 125078904 129711456 145925388 166771872 187618356 194567184 218888082 250157808 259422912 291850776 328332123 333543744 375236712 389134368 437776164 500315616 583701552 656664246 750473424 778268736 875552328 1000631232 1167403104 1313328492 1500946848 1751104656 2334806208 2626656984 3001893696 3502209312 5253313968 7004418624 10506627936 21013255872
- Sum of all divisors σ(n): 71511379456
- Sum of proper divisors (its aliquot sum) s(n): 50498123584
- 21013255872 is an abundant number, because the sum of its proper divisors (50498123584) is greater than itself. Its abundance is 29484867712
Bases of 21013255872
- Binary: 100111001000111110011010110110000002
- Hexadecimal: 0x4E47CD6C0
- Base-36: 9NIR000
Squares and roots of 21013255872
- 21013255872 squared (210132558722) is 441556922342142480384
- 21013255872 cubed (210132558723) is 9278548591228273468989732814848
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The
square root of 21013255872 is 144959.4973501219 -
The
cube root of 21013255872 is 2759.5045613543
Scales and comparisons
How big is 21013255872?- 21,013,255,872 seconds is equal to 668 years, 8 weeks, 23 hours, 31 minutes, 12 seconds.
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To count from 1 to 21,013,255,872 would take you about one thousand, three hundred thirty-six 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 21013255872 cubic inches would be around 230 feet tall.
Recreational maths with 21013255872
- 21013255872 backwards is 27855231012
- 21013255872 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21013255872's digits is 36
- More coming soon!
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