21255220
21,255,220 is an even composite number composed of five prime numbers multiplied together.
21255220 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eight divisors.
Prime factorization of 21255220:
22 × 5 × 72 × 232 × 41
(2 × 2 × 5 × 7 × 7 × 23 × 23 × 41)See below for interesting mathematical facts about the number 21255220 from the Numbermatics database.
Names of 21255220
- Cardinal: 21255220 can be written as Twenty-one million, two hundred fifty-five thousand, two hundred twenty.
Scientific notation
- Scientific notation: 2.125522 × 107
Factors of 21255220
Divisors of 21255220
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 4 5 7 10 14 20 23 28 35 41 46 49 70 82 92 98 115 140 161 164 196 205 230 245 287 322 410 460 490 529 574 644 805 820 943 980 1058 1127 1148 1435 1610 1886 2009 2116 2254 2645 2870 3220 3703 3772 4018 4508 4715 5290 5635 5740 6601 7406 8036 9430 10045 10580 11270 13202 14812 18515 18860 20090 21689 22540 25921 26404 33005 37030 40180 43378 46207 51842 66010 74060 86756 92414 103684 108445 129605 132020 151823 184828 216890 231035 259210 303646 433780 462070 518420 607292 759115 924140 1062761 1518230 2125522 3036460 4251044 5313805 10627610 21255220
- Sum of all divisors σ(n): 55603044
- Sum of proper divisors (its aliquot sum) s(n): 34347824
- 21255220 is an abundant number, because the sum of its proper divisors (34347824) is greater than itself. Its abundance is 13092604
Bases of 21255220
- Binary: 10100010001010100001101002
- Hexadecimal: 0x1445434
- Base-36: CNKMS
Squares and roots of 21255220
- 21255220 squared (212552202) is 451784377248400
- 21255220 cubed (212552203) is 9602776330977736648000
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The
square root of 21255220 is 4610.3383823751 -
The
cube root of 21255220 is 277.0055909935
Scales and comparisons
How big is 21255220?- 21,255,220 seconds is equal to 35 weeks, 1 day, 13 minutes, 40 seconds.
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To count from 1 to 21,255,220 would take you about five 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 21255220 cubic inches would be around 23.1 feet tall.
Recreational maths with 21255220
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The information we have on file for 21255220 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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