21628672
21,628,672 is an even composite number composed of four prime numbers multiplied together.
21628672 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 21628672:
28 × 13 × 67 × 97
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 13 × 67 × 97)See below for interesting mathematical facts about the number 21628672 from the Numbermatics database.
Names of 21628672
- Cardinal: 21628672 can be written as Twenty-one million, six hundred twenty-eight thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 2.1628672 × 107
Factors of 21628672
Divisors of 21628672
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 8 13 16 26 32 52 64 67 97 104 128 134 194 208 256 268 388 416 536 776 832 871 1072 1261 1552 1664 1742 2144 2522 3104 3328 3484 4288 5044 6208 6499 6968 8576 10088 12416 12998 13936 17152 20176 24832 25996 27872 40352 51992 55744 80704 84487 103984 111488 161408 168974 207968 222976 322816 337948 415936 675896 831872 1351792 1663744 2703584 5407168 10814336 21628672
- Sum of all divisors σ(n): 47674256
- Sum of proper divisors (its aliquot sum) s(n): 26045584
- 21628672 is an abundant number, because the sum of its proper divisors (26045584) is greater than itself. Its abundance is 4416912
Bases of 21628672
- Binary: 10100101000000111000000002
- Hexadecimal: 0x14A0700
- Base-36: CVKSG
Squares and roots of 21628672
- 21628672 squared (216286722) is 467799452483584
- 21628672 cubed (216286723) is 10117880919547023720448
-
The
square root of 21628672 is 4650.6636085617 -
The
cube root of 21628672 is 278.6185011215
Scales and comparisons
How big is 21628672?- 21,628,672 seconds is equal to 35 weeks, 5 days, 7 hours, 57 minutes, 52 seconds.
-
To count from 1 to 21,628,672 would take you about four 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 21628672 cubic inches would be around 23.2 feet tall.
Recreational maths with 21628672
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The information we have on file for 21628672 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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