21312912
21,312,912 is an even composite number composed of five prime numbers multiplied together.
21312912 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 21312912:
24 × 3 × 29 × 61 × 251
(2 × 2 × 2 × 2 × 3 × 29 × 61 × 251)See below for interesting mathematical facts about the number 21312912 from the Numbermatics database.
Names of 21312912
- Cardinal: 21312912 can be written as Twenty-one million, three hundred twelve thousand, nine hundred twelve.
Scientific notation
- Scientific notation: 2.1312912 × 107
Factors of 21312912
Divisors of 21312912
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 3 4 6 8 12 16 24 29 48 58 61 87 116 122 174 183 232 244 251 348 366 464 488 502 696 732 753 976 1004 1392 1464 1506 1769 2008 2928 3012 3538 4016 5307 6024 7076 7279 10614 12048 14152 14558 15311 21228 21837 28304 29116 30622 42456 43674 45933 58232 61244 84912 87348 91866 116464 122488 174696 183732 244976 349392 367464 444019 734928 888038 1332057 1776076 2664114 3552152 5328228 7104304 10656456 21312912
- Sum of all divisors σ(n): 58121280
- Sum of proper divisors (its aliquot sum) s(n): 36808368
- 21312912 is an abundant number, because the sum of its proper divisors (36808368) is greater than itself. Its abundance is 15495456
Bases of 21312912
- Binary: 10100010100110101100100002
- Hexadecimal: 0x1453590
- Base-36: COT5C
Squares and roots of 21312912
- 21312912 squared (213129122) is 454240217919744
- 21312912 cubed (213129123) is 9681181791384326934528
-
The
square root of 21312912 is 4616.5909500409 -
The
cube root of 21312912 is 277.2559854769
Scales and comparisons
How big is 21312912?- 21,312,912 seconds is equal to 35 weeks, 1 day, 16 hours, 15 minutes, 12 seconds.
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To count from 1 to 21,312,912 would take you about six days!
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 21312912 cubic inches would be around 23.1 feet tall.
Recreational maths with 21312912
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The information we have on file for 21312912 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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