21369920
21,369,920 is an even composite number composed of five prime numbers multiplied together.
21369920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21369920:
26 × 5 × 11 × 13 × 467
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 11 × 13 × 467)See below for interesting mathematical facts about the number 21369920 from the Numbermatics database.
Names of 21369920
- Cardinal: 21369920 can be written as Twenty-one million, three hundred sixty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.136992 × 107
Factors of 21369920
Divisors of 21369920
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 8 10 11 13 16 20 22 26 32 40 44 52 55 64 65 80 88 104 110 130 143 160 176 208 220 260 286 320 352 416 440 467 520 572 704 715 832 880 934 1040 1144 1430 1760 1868 2080 2288 2335 2860 3520 3736 4160 4576 4670 5137 5720 6071 7472 9152 9340 10274 11440 12142 14944 18680 20548 22880 24284 25685 29888 30355 37360 41096 45760 48568 51370 60710 66781 74720 82192 97136 102740 121420 133562 149440 164384 194272 205480 242840 267124 328768 333905 388544 410960 485680 534248 667810 821920 971360 1068496 1335620 1643840 1942720 2136992 2671240 4273984 5342480 10684960 21369920
- Sum of all divisors σ(n): 59911488
- Sum of proper divisors (its aliquot sum) s(n): 38541568
- 21369920 is an abundant number, because the sum of its proper divisors (38541568) is greater than itself. Its abundance is 17171648
Bases of 21369920
- Binary: 10100011000010100010000002
- Hexadecimal: 0x1461440
- Base-36: CQ14W
Squares and roots of 21369920
- 21369920 squared (213699202) is 456673480806400
- 21369920 cubed (213699203) is 9759075750954303488000
-
The
square root of 21369920 is 4622.7610797011 -
The
cube root of 21369920 is 277.5029678011
Scales and comparisons
How big is 21369920?- 21,369,920 seconds is equal to 35 weeks, 2 days, 8 hours, 5 minutes, 20 seconds.
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To count from 1 to 21,369,920 would take you about eight minutes!
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 21369920 cubic inches would be around 23.1 feet tall.
Recreational maths with 21369920
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