20931372
20,931,372 is an even composite number composed of five prime numbers multiplied together.
20931372 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 20931372:
22 × 34 × 7 × 11 × 839
(2 × 2 × 3 × 3 × 3 × 3 × 7 × 11 × 839)See below for interesting mathematical facts about the number 20931372 from the Numbermatics database.
Names of 20931372
- Cardinal: 20931372 can be written as Twenty million, nine hundred thirty-one thousand, three hundred seventy-two.
Scientific notation
- Scientific notation: 2.0931372 × 107
Factors of 20931372
Divisors of 20931372
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 33 36 42 44 54 63 66 77 81 84 99 108 126 132 154 162 189 198 231 252 297 308 324 378 396 462 567 594 693 756 839 891 924 1134 1188 1386 1678 1782 2079 2268 2517 2772 3356 3564 4158 5034 5873 6237 7551 8316 9229 10068 11746 12474 15102 17619 18458 22653 23492 24948 27687 30204 35238 36916 45306 52857 55374 64603 67959 70476 83061 90612 105714 110748 129206 135918 158571 166122 193809 211428 249183 258412 271836 317142 332244 387618 475713 498366 581427 634284 747549 775236 951426 996732 1162854 1495098 1744281 1902852 2325708 2990196 3488562 5232843 6977124 10465686 20931372
- Sum of all divisors σ(n): 68302080
- Sum of proper divisors (its aliquot sum) s(n): 47370708
- 20931372 is an abundant number, because the sum of its proper divisors (47370708) is greater than itself. Its abundance is 26439336
Bases of 20931372
- Binary: 10011111101100011001011002
- Hexadecimal: 0x13F632C
- Base-36: CGMR0
Squares and roots of 20931372
- 20931372 squared (209313722) is 438122333802384
- 20931372 cubed (209313723) is 9170501550325873990848
-
The
square root of 20931372 is 4575.0816386159 -
The
cube root of 20931372 is 275.5915508485
Scales and comparisons
How big is 20931372?- 20,931,372 seconds is equal to 34 weeks, 4 days, 6 hours, 16 minutes, 12 seconds.
-
To count from 1 to 20,931,372 would take you about fifty-one 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 20931372 cubic inches would be around 23 feet tall.
Recreational maths with 20931372
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