21387351942
21,387,351,942 is an even composite number composed of six prime numbers multiplied together.
21387351942 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 21387351942:
2 × 35 × 11 × 172 × 109 × 127
(2 × 3 × 3 × 3 × 3 × 3 × 11 × 17 × 17 × 109 × 127)See below for interesting mathematical facts about the number 21387351942 from the Numbermatics database.
Names of 21387351942
- Cardinal: 21387351942 can be written as Twenty-one billion, three hundred eighty-seven million, three hundred fifty-one thousand, nine hundred forty-two.
Scientific notation
- Scientific notation: 2.1387351942 × 1010
Factors of 21387351942
Divisors of 21387351942
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 6 9 11 17 18 22 27 33 34 51 54 66 81 99 102 109 127 153 162 187 198 218 243 254 289 297 306 327 374 381 459 486 561 578 594 654 762 867 891 918 981 1122 1143 1199 1377 1397 1683 1734 1782 1853 1962 2159 2286 2398 2601 2673 2754 2794 2943 3179 3366 3429 3597 3706 4131 4191 4318 5049 5202 5346 5559 5886 6358 6477 6858 7194 7803 8262 8382 8829 9537 10098 10287 10791 11118 12573 12954 13843 15147 15606 16677 17658 19074 19431 20383 20574 21582 23409 23749 25146 26487 27686 28611 30294 30861 31501 32373 33354 36703 37719 38862 40766 41529 45441 46818 47498 50031 52974 57222 58293 61149 61722 63002 64746 70227 71247 73406 75438 83058 85833 90882 94503 97119 100062 110109 113157 116586 122298 124587 140454 142494 150093 152273 171666 174879 183447 189006 194238 213741 220218 226314 235331 249174 257499 283509 291357 300186 304546 330327 339471 346511 349758 366894 373761 403733 427482 450279 456819 470662 514998 524637 550341 567018 582714 641223 660654 678942 693022 705993 747522 772497 807466 850527 900558 913638 990981 1039533 1049274 1100682 1121283 1211199 1282446 1370457 1411986 1544994 1651023 1701054 1923669 1981962 2079066 2117979 2242566 2422398 2551581 2588641 2740914 2972943 3118599 3302046 3363849 3633597 3847338 4000627 4111371 4235958 4953069 5103162 5177282 5771007 5945886 6237198 6353937 6727698 7267194 7654743 7765923 8001254 8222742 8918829 9355797 9906138 10900791 11542014 12001881 12334113 12707874 15309486 15531846 17837658 18711594 19061811 21801582 23297769 24003762 24668226 28067391 32702373 36005643 37002339 38123622 44006897 46595538 56134782 57185433 65404746 69893307 72011286 74004678 84202173 88013794 98107119 108016929 114370866 132020691 139786614 168404346 196214238 209679921 216033858 264041382 324050787 396062073 419359842 629039763 648101574 792124146 972152361 1188186219 1258079526 1944304722 2376372438 3564558657 7129117314 10693675971 21387351942
- Sum of all divisors σ(n): 56642826240
- Sum of proper divisors (its aliquot sum) s(n): 35255474298
- 21387351942 is an abundant number, because the sum of its proper divisors (35255474298) is greater than itself. Its abundance is 13868122356
Bases of 21387351942
- Binary: 100111110101100100100010111100001102
- Hexadecimal: 0x4FAC91786
- Base-36: 9TPH6DI
Squares and roots of 21387351942
- 21387351942 squared (213873519422) is 457418823090971171364
- 21387351942 cubed (213873519423) is 9782977354342036724537860188888
-
The
square root of 21387351942 is 146244.1518215343 -
The
cube root of 21387351942 is 2775.7840250707
Scales and comparisons
How big is 21387351942?- 21,387,351,942 seconds is equal to 680 years, 2 weeks, 4 days, 19 hours, 5 minutes, 42 seconds.
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To count from 1 to 21,387,351,942 would take you about one thousand, three hundred sixty 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 21387351942 cubic inches would be around 231.3 feet tall.
Recreational maths with 21387351942
- 21387351942 backwards is 24915378312
- The number of decimal digits it has is: 11
- The sum of 21387351942's digits is 45
- More coming soon!
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The information we have on file for 21387351942 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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