21288072
21,288,072 is an even composite number composed of five prime numbers multiplied together.
21288072 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21288072:
23 × 3 × 13 × 312 × 71
(2 × 2 × 2 × 3 × 13 × 31 × 31 × 71)See below for interesting mathematical facts about the number 21288072 from the Numbermatics database.
Names of 21288072
- Cardinal: 21288072 can be written as Twenty-one million, two hundred eighty-eight thousand and seventy-two.
Scientific notation
- Scientific notation: 2.1288072 × 107
Factors of 21288072
Divisors of 21288072
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 8 12 13 24 26 31 39 52 62 71 78 93 104 124 142 156 186 213 248 284 312 372 403 426 568 744 806 852 923 961 1209 1612 1704 1846 1922 2201 2418 2769 2883 3224 3692 3844 4402 4836 5538 5766 6603 7384 7688 8804 9672 11076 11532 12493 13206 17608 22152 23064 24986 26412 28613 37479 49972 52824 57226 68231 74958 85839 99944 114452 136462 149916 171678 204693 228904 272924 299832 343356 409386 545848 686712 818772 887003 1637544 1774006 2661009 3548012 5322018 7096024 10644036 21288072
- Sum of all divisors σ(n): 60056640
- Sum of proper divisors (its aliquot sum) s(n): 38768568
- 21288072 is an abundant number, because the sum of its proper divisors (38768568) is greater than itself. Its abundance is 17480496
Bases of 21288072
- Binary: 10100010011010100100010002
- Hexadecimal: 0x144D488
- Base-36: CO9ZC
Squares and roots of 21288072
- 21288072 squared (212880722) is 453182009477184
- 21288072 cubed (212880723) is 9647371246854975349248
-
The
square root of 21288072 is 4613.8998688745 -
The
cube root of 21288072 is 277.1482305159
Scales and comparisons
How big is 21288072?- 21,288,072 seconds is equal to 35 weeks, 1 day, 9 hours, 21 minutes, 12 seconds.
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To count from 1 to 21,288,072 would take you about five 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 21288072 cubic inches would be around 23.1 feet tall.
Recreational maths with 21288072
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The information we have on file for 21288072 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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