12721920
12,721,920 is an even composite number composed of four prime numbers multiplied together.
12721920 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 12721920:
28 × 3 × 5 × 3313
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 3313)See below for interesting mathematical facts about the number 12721920 from the Numbermatics database.
Names of 12721920
- Cardinal: 12721920 can be written as Twelve million, seven hundred twenty-one thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.272192 × 107
Factors of 12721920
Divisors of 12721920
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 640 768 960 1280 1920 3313 3840 6626 9939 13252 16565 19878 26504 33130 39756 49695 53008 66260 79512 99390 106016 132520 159024 198780 212032 265040 318048 397560 424064 530080 636096 795120 848128 1060160 1272192 1590240 2120320 2544384 3180480 4240640 6360960 12721920
- Sum of all divisors σ(n): 40642896
- Sum of proper divisors (its aliquot sum) s(n): 27920976
- 12721920 is an abundant number, because the sum of its proper divisors (27920976) is greater than itself. Its abundance is 15199056
Bases of 12721920
- Binary: 1100001000011111000000002
- Hexadecimal: 0xC21F00
- Base-36: 7KOAO
Squares and roots of 12721920
- 12721920 squared (127219202) is 161847248486400
- 12721920 cubed (127219203) is 2059007747464101888000
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The
square root of 12721920 is 3566.7800605027 -
The
cube root of 12721920 is 233.4448084123
Scales and comparisons
How big is 12721920?- 12,721,920 seconds is equal to 21 weeks, 5 hours, 52 minutes.
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To count from 1 to 12,721,920 would take you about thirty-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 12721920 cubic inches would be around 19.5 feet tall.
Recreational maths with 12721920
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The information we have on file for 12721920 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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