21388108
21,388,108 is an even composite number composed of four prime numbers multiplied together.
21388108 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21388108:
22 × 74 × 17 × 131
(2 × 2 × 7 × 7 × 7 × 7 × 17 × 131)See below for interesting mathematical facts about the number 21388108 from the Numbermatics database.
Names of 21388108
- Cardinal: 21388108 can be written as Twenty-one million, three hundred eighty-eight thousand, one hundred eight.
Scientific notation
- Scientific notation: 2.1388108 × 107
Factors of 21388108
Divisors of 21388108
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 4 7 14 17 28 34 49 68 98 119 131 196 238 262 343 476 524 686 833 917 1372 1666 1834 2227 2401 3332 3668 4454 4802 5831 6419 8908 9604 11662 12838 15589 23324 25676 31178 40817 44933 62356 81634 89866 109123 163268 179732 218246 314531 436492 629062 763861 1258124 1527722 3055444 5347027 10694054 21388108
- Sum of all divisors σ(n): 46586232
- Sum of proper divisors (its aliquot sum) s(n): 25198124
- 21388108 is an abundant number, because the sum of its proper divisors (25198124) is greater than itself. Its abundance is 3810016
Bases of 21388108
- Binary: 10100011001011011010011002
- Hexadecimal: 0x1465B4C
- Base-36: CQF64
Squares and roots of 21388108
- 21388108 squared (213881082) is 457451163819664
- 21388108 cubed (213881083) is 9784014896500666155712
-
The
square root of 21388108 is 4624.7278838867 -
The
cube root of 21388108 is 277.5816733327
Scales and comparisons
How big is 21388108?- 21,388,108 seconds is equal to 35 weeks, 2 days, 13 hours, 8 minutes, 28 seconds.
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To count from 1 to 21,388,108 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 21388108 cubic inches would be around 23.1 feet tall.
Recreational maths with 21388108
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The information we have on file for 21388108 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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