21315690
21,315,690 is an even composite number composed of five prime numbers multiplied together.
21315690 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21315690:
2 × 33 × 5 × 11 × 7177
(2 × 3 × 3 × 3 × 5 × 11 × 7177)See below for interesting mathematical facts about the number 21315690 from the Numbermatics database.
Names of 21315690
- Cardinal: 21315690 can be written as Twenty-one million, three hundred fifteen thousand, six hundred ninety.
Scientific notation
- Scientific notation: 2.131569 × 107
Factors of 21315690
Divisors of 21315690
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 5 6 9 10 11 15 18 22 27 30 33 45 54 55 66 90 99 110 135 165 198 270 297 330 495 594 990 1485 2970 7177 14354 21531 35885 43062 64593 71770 78947 107655 129186 157894 193779 215310 236841 322965 387558 394735 473682 645930 710523 789470 968895 1184205 1421046 1937790 2131569 2368410 3552615 4263138 7105230 10657845 21315690
- Sum of all divisors σ(n): 62017920
- Sum of proper divisors (its aliquot sum) s(n): 40702230
- 21315690 is an abundant number, because the sum of its proper divisors (40702230) is greater than itself. Its abundance is 19386540
Bases of 21315690
- Binary: 10100010101000000011010102
- Hexadecimal: 0x145406A
- Base-36: COVAI
Squares and roots of 21315690
- 21315690 squared (213156902) is 454358640176100
- 21315690 cubed (213156903) is 9684967922815293009000
-
The
square root of 21315690 is 4616.8918115981 -
The
cube root of 21315690 is 277.2680311273
Scales and comparisons
How big is 21315690?- 21,315,690 seconds is equal to 35 weeks, 1 day, 17 hours, 1 minute, 30 seconds.
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To count from 1 to 21,315,690 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 21315690 cubic inches would be around 23.1 feet tall.
Recreational maths with 21315690
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The information we have on file for 21315690 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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