21386772
21,386,772 is an even composite number composed of five prime numbers multiplied together.
What does the number 21386772 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 72 divisors.
21386772 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21386772:
22 × 32 × 11 × 53 × 1019
(2 × 2 × 3 × 3 × 11 × 53 × 1019)See below for interesting mathematical facts about the number 21386772 from the Numbermatics database.
Names of 21386772
- Cardinal: 21386772 can be written as Twenty-one million, three hundred eighty-six thousand, seven hundred seventy-two.
Scientific notation
- Scientific notation: 2.1386772 × 107
Factors of 21386772
Divisors of 21386772
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 9 11 12 18 22 33 36 44 53 66 99 106 132 159 198 212 318 396 477 583 636 954 1019 1166 1749 1908 2038 2332 3057 3498 4076 5247 6114 6996 9171 10494 11209 12228 18342 20988 22418 33627 36684 44836 54007 67254 100881 108014 134508 162021 201762 216028 324042 403524 486063 594077 648084 972126 1188154 1782231 1944252 2376308 3564462 5346693 7128924 10693386 21386772
- Sum of all divisors σ(n): 60147360
- Sum of proper divisors (its aliquot sum) s(n): 38760588
- 21386772 is an abundant number, because the sum of its proper divisors (38760588) is greater than itself. Its abundance is 17373816
Bases of 21386772
- Binary: 10100011001010110000101002
- Hexadecimal: 0x1465614
- Base-36: CQE50
Squares and roots of 21386772
- 21386772 squared (213867722) is 457394016579984
- 21386772 cubed (213867723) is 9782181546760337571648
-
The
square root of 21386772 is 4624.5834407003 -
The
cube root of 21386772 is 277.5758935347
Scales and comparisons
How big is 21386772?- 21,386,772 seconds is equal to 35 weeks, 2 days, 12 hours, 46 minutes, 12 seconds.
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To count from 1 to 21,386,772 would take you about seven hours!
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 21386772 cubic inches would be around 23.1 feet tall.
Recreational maths with 21386772
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The information we have on file for 21386772 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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