21331856
21,331,856 is an even composite number composed of four prime numbers multiplied together.
21331856 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 21331856:
24 × 73 × 132 × 23
(2 × 2 × 2 × 2 × 7 × 7 × 7 × 13 × 13 × 23)See below for interesting mathematical facts about the number 21331856 from the Numbermatics database.
Names of 21331856
- Cardinal: 21331856 can be written as Twenty-one million, three hundred thirty-one thousand, eight hundred fifty-six.
Scientific notation
- Scientific notation: 2.1331856 × 107
Factors of 21331856
Divisors of 21331856
- Number of divisors d(n): 120
-
Complete list of divisors:
1 2 4 7 8 13 14 16 23 26 28 46 49 52 56 91 92 98 104 112 161 169 182 184 196 208 299 322 338 343 364 368 392 598 637 644 676 686 728 784 1127 1183 1196 1274 1288 1352 1372 1456 2093 2254 2366 2392 2548 2576 2704 2744 3887 4186 4459 4508 4732 4784 5096 5488 7774 7889 8281 8372 8918 9016 9464 10192 14651 15548 15778 16562 16744 17836 18032 18928 27209 29302 31096 31556 33124 33488 35672 54418 57967 58604 62192 63112 66248 71344 102557 108836 115934 117208 126224 132496 190463 205114 217672 231868 234416 380926 410228 435344 463736 761852 820456 927472 1333241 1523704 1640912 2666482 3047408 5332964 10665928 21331856
- Sum of all divisors σ(n): 54460800
- Sum of proper divisors (its aliquot sum) s(n): 33128944
- 21331856 is an abundant number, because the sum of its proper divisors (33128944) is greater than itself. Its abundance is 11797088
Bases of 21331856
- Binary: 10100010101111111100100002
- Hexadecimal: 0x1457F90
- Base-36: CP7RK
Squares and roots of 21331856
- 21331856 squared (213318562) is 455048080404736
- 21331856 cubed (213318563) is 9707020124270250070016
-
The
square root of 21331856 is 4618.6422247237 -
The
cube root of 21331856 is 277.3381075567
Scales and comparisons
How big is 21331856?- 21,331,856 seconds is equal to 35 weeks, 1 day, 21 hours, 30 minutes, 56 seconds.
-
To count from 1 to 21,331,856 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 21331856 cubic inches would be around 23.1 feet tall.
Recreational maths with 21331856
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The information we have on file for 21331856 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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