21125280
21,125,280 is an even composite number composed of five prime numbers multiplied together.
21125280 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21125280:
25 × 3 × 5 × 11 × 4001
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 11 × 4001)See below for interesting mathematical facts about the number 21125280 from the Numbermatics database.
Names of 21125280
- Cardinal: 21125280 can be written as Twenty-one million, one hundred twenty-five thousand, two hundred eighty.
Scientific notation
- Scientific notation: 2.112528 × 107
Factors of 21125280
Divisors of 21125280
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 66 80 88 96 110 120 132 160 165 176 220 240 264 330 352 440 480 528 660 880 1056 1320 1760 2640 4001 5280 8002 12003 16004 20005 24006 32008 40010 44011 48012 60015 64016 80020 88022 96024 120030 128032 132033 160040 176044 192048 220055 240060 264066 320080 352088 384096 440110 480120 528132 640160 660165 704176 880220 960240 1056264 1320330 1408352 1760440 1920480 2112528 2640660 3520880 4225056 5281320 7041760 10562640 21125280
- Sum of all divisors σ(n): 72612288
- Sum of proper divisors (its aliquot sum) s(n): 51487008
- 21125280 is an abundant number, because the sum of its proper divisors (51487008) is greater than itself. Its abundance is 30361728
Bases of 21125280
- Binary: 10100001001011000101000002
- Hexadecimal: 0x14258A0
- Base-36: CKSDC
Squares and roots of 21125280
- 21125280 squared (211252802) is 446277455078400
- 21125280 cubed (211252803) is 9427736196218621952000
-
The
square root of 21125280 is 4596.2245375963 -
The
cube root of 21125280 is 276.4399620253
Scales and comparisons
How big is 21125280?- 21,125,280 seconds is equal to 34 weeks, 6 days, 12 hours, 8 minutes.
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To count from 1 to 21,125,280 would take you about two 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 21125280 cubic inches would be around 23 feet tall.
Recreational maths with 21125280
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The information we have on file for 21125280 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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