20961720
20,961,720 is an even composite number composed of five prime numbers multiplied together.
20961720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20961720:
23 × 33 × 5 × 13 × 1493
(2 × 2 × 2 × 3 × 3 × 3 × 5 × 13 × 1493)See below for interesting mathematical facts about the number 20961720 from the Numbermatics database.
Names of 20961720
- Cardinal: 20961720 can be written as Twenty million, nine hundred sixty-one thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.096172 × 107
Factors of 20961720
Divisors of 20961720
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 27 30 36 39 40 45 52 54 60 65 72 78 90 104 108 117 120 130 135 156 180 195 216 234 260 270 312 351 360 390 468 520 540 585 702 780 936 1080 1170 1404 1493 1560 1755 2340 2808 2986 3510 4479 4680 5972 7020 7465 8958 11944 13437 14040 14930 17916 19409 22395 26874 29860 35832 38818 40311 44790 53748 58227 59720 67185 77636 80622 89580 97045 107496 116454 134370 155272 161244 174681 179160 194090 201555 232908 268740 291135 322488 349362 388180 403110 465816 524043 537480 582270 698724 776360 806220 873405 1048086 1164540 1397448 1612440 1746810 2096172 2329080 2620215 3493620 4192344 5240430 6987240 10480860 20961720
- Sum of all divisors σ(n): 75297600
- Sum of proper divisors (its aliquot sum) s(n): 54335880
- 20961720 is an abundant number, because the sum of its proper divisors (54335880) is greater than itself. Its abundance is 33374160
Bases of 20961720
- Binary: 10011111111011001101110002
- Hexadecimal: 0x13FD9B8
- Base-36: CHA60
Squares and roots of 20961720
- 20961720 squared (209617202) is 439393705358400
- 20961720 cubed (209617203) is 9210447821485280448000
-
The
square root of 20961720 is 4578.3970994225 -
The
cube root of 20961720 is 275.7246781871
Scales and comparisons
How big is 20961720?- 20,961,720 seconds is equal to 34 weeks, 4 days, 14 hours, 42 minutes.
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To count from 1 to 20,961,720 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 20961720 cubic inches would be around 23 feet tall.
Recreational maths with 20961720
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The information we have on file for 20961720 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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