21989664
21,989,664 is an even composite number composed of four prime numbers multiplied together.
21989664 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21989664:
25 × 33 × 31 × 821
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 31 × 821)See below for interesting mathematical facts about the number 21989664 from the Numbermatics database.
Names of 21989664
- Cardinal: 21989664 can be written as Twenty-one million, nine hundred eighty-nine thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 2.1989664 × 107
Factors of 21989664
Divisors of 21989664
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 48 54 62 72 93 96 108 124 144 186 216 248 279 288 372 432 496 558 744 821 837 864 992 1116 1488 1642 1674 2232 2463 2976 3284 3348 4464 4926 6568 6696 7389 8928 9852 13136 13392 14778 19704 22167 25451 26272 26784 29556 39408 44334 50902 59112 76353 78816 88668 101804 118224 152706 177336 203608 229059 236448 305412 354672 407216 458118 610824 687177 709344 814432 916236 1221648 1374354 1832472 2443296 2748708 3664944 5497416 7329888 10994832 21989664
- Sum of all divisors σ(n): 66286080
- Sum of proper divisors (its aliquot sum) s(n): 44296416
- 21989664 is an abundant number, because the sum of its proper divisors (44296416) is greater than itself. Its abundance is 22306752
Bases of 21989664
- Binary: 10100111110001001001000002
- Hexadecimal: 0x14F8920
- Base-36: D3BC0
Squares and roots of 21989664
- 21989664 squared (219896642) is 483545322832896
- 21989664 cubed (219896643) is 10632999177866911186944
-
The
square root of 21989664 is 4689.3138090769 -
The
cube root of 21989664 is 280.1600445575
Scales and comparisons
How big is 21989664?- 21,989,664 seconds is equal to 36 weeks, 2 days, 12 hours, 14 minutes, 24 seconds.
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To count from 1 to 21,989,664 would take you about two weeks!
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 21989664 cubic inches would be around 23.3 feet tall.
Recreational maths with 21989664
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The information we have on file for 21989664 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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