21211920
21,211,920 is an even composite number composed of five prime numbers multiplied together.
21211920 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 21211920:
24 × 32 × 5 × 17 × 1733
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 17 × 1733)See below for interesting mathematical facts about the number 21211920 from the Numbermatics database.
Names of 21211920
- Cardinal: 21211920 can be written as Twenty-one million, two hundred eleven thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.121192 × 107
Factors of 21211920
Divisors of 21211920
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 30 34 36 40 45 48 51 60 68 72 80 85 90 102 120 136 144 153 170 180 204 240 255 272 306 340 360 408 510 612 680 720 765 816 1020 1224 1360 1530 1733 2040 2448 3060 3466 4080 5199 6120 6932 8665 10398 12240 13864 15597 17330 20796 25995 27728 29461 31194 34660 41592 51990 58922 62388 69320 77985 83184 88383 103980 117844 124776 138640 147305 155970 176766 207960 235688 249552 265149 294610 311940 353532 415920 441915 471376 530298 589220 623880 707064 883830 1060596 1178440 1247760 1325745 1414128 1767660 2121192 2356880 2651490 3535320 4242384 5302980 7070640 10605960 21211920
- Sum of all divisors σ(n): 75470616
- Sum of proper divisors (its aliquot sum) s(n): 54258696
- 21211920 is an abundant number, because the sum of its proper divisors (54258696) is greater than itself. Its abundance is 33046776
Bases of 21211920
- Binary: 10100001110101011000100002
- Hexadecimal: 0x143AB10
- Base-36: CMN80
Squares and roots of 21211920
- 21211920 squared (212119202) is 449945550086400
- 21211920 cubed (212119203) is 9544209012788709888000
-
The
square root of 21211920 is 4605.6400206703 -
The
cube root of 21211920 is 276.8173627833
Scales and comparisons
How big is 21211920?- 21,211,920 seconds is equal to 35 weeks, 12 hours, 12 minutes.
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To count from 1 to 21,211,920 would take you about four 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 21211920 cubic inches would be around 23.1 feet tall.
Recreational maths with 21211920
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The information we have on file for 21211920 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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