21397929984
21,397,929,984 is an even composite number composed of four prime numbers multiplied together.
21397929984 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21397929984:
215 × 32 × 372 × 53
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 37 × 37 × 53)See below for interesting mathematical facts about the number 21397929984 from the Numbermatics database.
Names of 21397929984
- Cardinal: 21397929984 can be written as Twenty-one billion, three hundred ninety-seven million, nine hundred twenty-nine thousand, nine hundred eighty-four.
Scientific notation
- Scientific notation: 2.1397929984 × 1010
Factors of 21397929984
Divisors of 21397929984
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 37 48 53 64 72 74 96 106 111 128 144 148 159 192 212 222 256 288 296 318 333 384 424 444 477 512 576 592 636 666 768 848 888 954 1024 1152 1184 1272 1332 1369 1536 1696 1776 1908 1961 2048 2304 2368 2544 2664 2738 3072 3392 3552 3816 3922 4096 4107 4608 4736 5088 5328 5476 5883 6144 6784 7104 7632 7844 8192 8214 9216 9472 10176 10656 10952 11766 12288 12321 13568 14208 15264 15688 16384 16428 17649 18432 18944 20352 21312 21904 23532 24576 24642 27136 28416 30528 31376 32768 32856 35298 36864 37888 40704 42624 43808 47064 49152 49284 54272 56832 61056 62752 65712 70596 72557 73728 75776 81408 85248 87616 94128 98304 98568 108544 113664 122112 125504 131424 141192 145114 147456 151552 162816 170496 175232 188256 197136 217088 217671 227328 244224 251008 262848 282384 290228 294912 303104 325632 340992 350464 376512 394272 434176 435342 454656 488448 502016 525696 564768 580456 606208 651264 653013 681984 700928 753024 788544 868352 870684 909312 976896 1004032 1051392 1129536 1160912 1212416 1302528 1306026 1363968 1401856 1506048 1577088 1736704 1741368 1818624 1953792 2008064 2102784 2259072 2321824 2605056 2612052 2727936 2803712 3012096 3154176 3482736 3637248 3907584 4016128 4205568 4518144 4643648 5210112 5224104 5455872 5607424 6024192 6308352 6965472 7815168 8032256 8411136 9036288 9287296 10448208 10911744 11214848 12048384 12616704 13930944 15630336 16064512 16822272 18072576 18574592 20896416 22429696 24096768 25233408 27861888 32129024 33644544 36145152 37149184 41792832 44859392 48193536 50466816 55723776 64258048 67289088 72290304 74298368 83585664 96387072 100933632 111447552 134578176 144580608 148596736 167171328 192774144 201867264 222895104 289161216 297193472 334342656 403734528 445790208 578322432 594386944 668685312 891580416 1188773888 1337370624 1783160832 2377547776 2674741248 3566321664 5349482496 7132643328 10698964992 21397929984
- Sum of all divisors σ(n): 64729836990
- Sum of proper divisors (its aliquot sum) s(n): 43331907006
- 21397929984 is an abundant number, because the sum of its proper divisors (43331907006) is greater than itself. Its abundance is 21933977022
Bases of 21397929984
- Binary: 100111110110110101010000000000000002
- Hexadecimal: 0x4FB6A8000
- Base-36: 9TVRWG0
Squares and roots of 21397929984
- 21397929984 squared (213979299842) is 457871407600166240256
- 21397929984 cubed (213979299843) is 9797500321503882675758410235904
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The
square root of 21397929984 is 146280.3130431433 -
The
cube root of 21397929984 is 2776.2415777495
Scales and comparisons
How big is 21397929984?- 21,397,929,984 seconds is equal to 680 years, 20 weeks, 1 day, 5 hours, 26 minutes, 24 seconds.
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To count from 1 to 21,397,929,984 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 21397929984 cubic inches would be around 231.4 feet tall.
Recreational maths with 21397929984
- 21397929984 backwards is 48992979312
- The number of decimal digits it has is: 11
- The sum of 21397929984's digits is 63
- More coming soon!
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