20387920
20,387,920 is an even composite number composed of four prime numbers multiplied together.
20387920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 20387920:
24 × 5 × 73 × 743
(2 × 2 × 2 × 2 × 5 × 7 × 7 × 7 × 743)See below for interesting mathematical facts about the number 20387920 from the Numbermatics database.
Names of 20387920
- Cardinal: 20387920 can be written as Twenty million, three hundred eighty-seven thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.038792 × 107
Factors of 20387920
Divisors of 20387920
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 35 40 49 56 70 80 98 112 140 196 245 280 343 392 490 560 686 743 784 980 1372 1486 1715 1960 2744 2972 3430 3715 3920 5201 5488 5944 6860 7430 10402 11888 13720 14860 20804 26005 27440 29720 36407 41608 52010 59440 72814 83216 104020 145628 182035 208040 254849 291256 364070 416080 509698 582512 728140 1019396 1274245 1456280 2038792 2548490 2912560 4077584 5096980 10193960 20387920
- Sum of all divisors σ(n): 55353600
- Sum of proper divisors (its aliquot sum) s(n): 34965680
- 20387920 is an abundant number, because the sum of its proper divisors (34965680) is greater than itself. Its abundance is 14577760
Bases of 20387920
- Binary: 10011011100011000010100002
- Hexadecimal: 0x1371850
- Base-36: C4ZF4
Squares and roots of 20387920
- 20387920 squared (203879202) is 415667281926400
- 20387920 cubed (203879203) is 8474591290532889088000
-
The
square root of 20387920 is 4515.2984397491 -
The
cube root of 20387920 is 273.1854974233
Scales and comparisons
How big is 20387920?- 20,387,920 seconds is equal to 33 weeks, 4 days, 23 hours, 18 minutes, 40 seconds.
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To count from 1 to 20,387,920 would take you about fifty 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 20387920 cubic inches would be around 22.8 feet tall.
Recreational maths with 20387920
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The information we have on file for 20387920 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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