21388016
21,388,016 is an even composite number composed of four prime numbers multiplied together.
What does the number 21388016 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 60 divisors.
21388016 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21388016:
24 × 13 × 312 × 107
(2 × 2 × 2 × 2 × 13 × 31 × 31 × 107)See below for interesting mathematical facts about the number 21388016 from the Numbermatics database.
Names of 21388016
- Cardinal: 21388016 can be written as Twenty-one million, three hundred eighty-eight thousand and sixteen.
Scientific notation
- Scientific notation: 2.1388016 × 107
Factors of 21388016
Divisors of 21388016
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 4 8 13 16 26 31 52 62 104 107 124 208 214 248 403 428 496 806 856 961 1391 1612 1712 1922 2782 3224 3317 3844 5564 6448 6634 7688 11128 12493 13268 15376 22256 24986 26536 43121 49972 53072 86242 99944 102827 172484 199888 205654 344968 411308 689936 822616 1336751 1645232 2673502 5347004 10694008 21388016
- Sum of all divisors σ(n): 46543896
- Sum of proper divisors (its aliquot sum) s(n): 25155880
- 21388016 is an abundant number, because the sum of its proper divisors (25155880) is greater than itself. Its abundance is 3767864
Bases of 21388016
- Binary: 10100011001011010111100002
- Hexadecimal: 0x1465AF0
- Base-36: CQF3K
Squares and roots of 21388016
- 21388016 squared (213880162) is 457447228416256
- 21388016 cubed (213880163) is 9783888640522537988096
-
The
square root of 21388016 is 4624.7179373449 -
The
cube root of 21388016 is 277.5812753305
Scales and comparisons
How big is 21388016?- 21,388,016 seconds is equal to 35 weeks, 2 days, 13 hours, 6 minutes, 56 seconds.
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To count from 1 to 21,388,016 would take you about seven hours!
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 21388016 cubic inches would be around 23.1 feet tall.
Recreational maths with 21388016
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The information we have on file for 21388016 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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