21120646872
21,120,646,872 is an even composite number composed of seven prime numbers multiplied together.
21120646872 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 21120646872:
23 × 3 × 13 × 29 × 103 × 131 × 173
(2 × 2 × 2 × 3 × 13 × 29 × 103 × 131 × 173)See below for interesting mathematical facts about the number 21120646872 from the Numbermatics database.
Names of 21120646872
- Cardinal: 21120646872 can be written as Twenty-one billion, one hundred twenty million, six hundred forty-six thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 2.1120646872 × 1010
Factors of 21120646872
Divisors of 21120646872
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 3 4 6 8 12 13 24 26 29 39 52 58 78 87 103 104 116 131 156 173 174 206 232 262 309 312 346 348 377 393 412 519 524 618 692 696 754 786 824 1038 1048 1131 1236 1339 1384 1508 1572 1703 2076 2249 2262 2472 2678 2987 3016 3144 3406 3799 4017 4152 4498 4524 5017 5109 5356 5974 6747 6812 7598 8034 8961 8996 9048 10034 10218 10712 11397 11948 13493 13494 13624 15051 15196 16068 17819 17922 17992 20068 20436 22663 22794 23896 26986 26988 30102 30392 32136 35638 35844 38831 40136 40479 40872 45326 45588 49387 53457 53972 53976 60204 65221 67989 71276 71688 77662 80958 90652 91176 98774 106914 107944 116493 120408 130442 135978 142552 148161 155324 161916 175409 181304 195663 197548 213828 231647 232986 260884 271956 294619 296322 310648 323832 350818 391297 391326 395096 427656 463294 465972 516751 521768 526227 543912 589238 592644 657227 694941 701636 782594 782652 883857 926588 931944 1033502 1052454 1173891 1178476 1185288 1314454 1389882 1403272 1550253 1565188 1565304 1767714 1853176 1971681 2067004 2104908 2334289 2347782 2356952 2628908 2779764 3100506 3130376 3535428 3943362 4134008 4209816 4668578 4695564 5086861 5257816 5559528 6201012 6717763 7002867 7070856 7886724 8543951 9337156 9391128 10173722 12402024 13435526 14005734 15260583 15773448 17087902 18674312 20153289 20347444 25631853 26871052 28011468 30345757 30521166 34175804 40306578 40694888 51263706 53742104 56022936 60691514 61042332 67694381 68351608 80613156 91037271 102527412 121383028 122084664 135388762 161226312 182074542 203083143 205054824 242766056 270777524 364149084 406166286 541555048 728298168 812332572 880026953 1624665144 1760053906 2640080859 3520107812 5280161718 7040215624 10560323436 21120646872
- Sum of all divisors σ(n): 60194534400
- Sum of proper divisors (its aliquot sum) s(n): 39073887528
- 21120646872 is an abundant number, because the sum of its proper divisors (39073887528) is greater than itself. Its abundance is 17953240656
Bases of 21120646872
- Binary: 100111010101110001101111110110110002
- Hexadecimal: 0x4EAE37ED8
- Base-36: 9PAORFC
Squares and roots of 21120646872
- 21120646872 squared (211206468722) is 446081724291723384384
- 21120646872 cubed (211206468723) is 9421534574818353913879183246848
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The
square root of 21120646872 is 145329.4425503655 -
The
cube root of 21120646872 is 2764.1975124189
Scales and comparisons
How big is 21120646872?- 21,120,646,872 seconds is equal to 671 years, 29 weeks, 4 days, 22 hours, 21 minutes, 12 seconds.
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To count from 1 to 21,120,646,872 would take you about one thousand, three hundred forty-three 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 21120646872 cubic inches would be around 230.3 feet tall.
Recreational maths with 21120646872
- 21120646872 backwards is 27864602112
- 21120646872 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21120646872's digits is 39
- More coming soon!
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