21385517616
21,385,517,616 is an even composite number composed of five prime numbers multiplied together.
21385517616 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred divisors.
Prime factorization of 21385517616:
24 × 34 × 61 × 157 × 1723
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 61 × 157 × 1723)See below for interesting mathematical facts about the number 21385517616 from the Numbermatics database.
Names of 21385517616
- Cardinal: 21385517616 can be written as Twenty-one billion, three hundred eighty-five million, five hundred seventeen thousand, six hundred sixteen.
Scientific notation
- Scientific notation: 2.1385517616 × 1010
Factors of 21385517616
Divisors of 21385517616
- Number of divisors d(n): 200
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 61 72 81 108 122 144 157 162 183 216 244 314 324 366 432 471 488 549 628 648 732 942 976 1098 1256 1296 1413 1464 1647 1723 1884 2196 2512 2826 2928 3294 3446 3768 4239 4392 4941 5169 5652 6588 6892 7536 8478 8784 9577 9882 10338 11304 12717 13176 13784 15507 16956 19154 19764 20676 22608 25434 26352 27568 28731 31014 33912 38308 39528 41352 46521 50868 57462 62028 67824 76616 79056 82704 86193 93042 101736 105103 114924 124056 139563 153232 172386 186084 203472 210206 229848 248112 258579 270511 279126 315309 344772 372168 420412 459696 517158 541022 558252 630618 689544 744336 775737 811533 840824 945927 1034316 1082044 1116504 1261236 1379088 1551474 1623066 1681648 1891854 2068632 2164088 2233008 2434599 2522472 2837781 3102948 3246132 3783708 4137264 4328176 4869198 5044944 5675562 6205896 6492264 7303797 7567416 8513343 9738396 11351124 12411792 12984528 14607594 15134832 16501171 17026686 19476792 21911391 22702248 29215188 33002342 34053372 38953584 43822782 45404496 49503513 58430376 66004684 68106744 87645564 99007026 116860752 132009368 136213488 148510539 175291128 198014052 264018736 297021078 350582256 396028104 445531617 594042156 792056208 891063234 1188084312 1336594851 1782126468 2376168624 2673189702 3564252936 5346379404 7128505872 10692758808 21385517616
- Sum of all divisors σ(n): 63348028304
- Sum of proper divisors (its aliquot sum) s(n): 41962510688
- 21385517616 is an abundant number, because the sum of its proper divisors (41962510688) is greater than itself. Its abundance is 20576993072
Bases of 21385517616
- Binary: 100111110101010110100011010001100002
- Hexadecimal: 0x4FAAD1A30
- Base-36: 9TODV00
Squares and roots of 21385517616
- 21385517616 squared (213855176162) is 457340363704246323456
- 21385517616 cubed (213855176163) is 9780460404505006764271522000896
-
The
square root of 21385517616 is 146237.8802362781 -
The
cube root of 21385517616 is 2775.7046660427
Scales and comparisons
How big is 21385517616?- 21,385,517,616 seconds is equal to 679 years, 51 weeks, 4 days, 13 hours, 33 minutes, 36 seconds.
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To count from 1 to 21,385,517,616 would take you about one thousand, three hundred fifty-nine 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 21385517616 cubic inches would be around 231.3 feet tall.
Recreational maths with 21385517616
- 21385517616 backwards is 61671558312
- The number of decimal digits it has is: 11
- The sum of 21385517616's digits is 45
- More coming soon!
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