21420750
21,420,750 is an even composite number composed of four prime numbers multiplied together.
21420750 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 21420750:
2 × 3 × 53 × 134
(2 × 3 × 5 × 5 × 5 × 13 × 13 × 13 × 13)See below for interesting mathematical facts about the number 21420750 from the Numbermatics database.
Names of 21420750
- Cardinal: 21420750 can be written as Twenty-one million, four hundred twenty thousand, seven hundred fifty.
Scientific notation
- Scientific notation: 2.142075 × 107
Factors of 21420750
Divisors of 21420750
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 3 5 6 10 13 15 25 26 30 39 50 65 75 78 125 130 150 169 195 250 325 338 375 390 507 650 750 845 975 1014 1625 1690 1950 2197 2535 3250 4225 4394 4875 5070 6591 8450 9750 10985 12675 13182 21125 21970 25350 28561 32955 42250 54925 57122 63375 65910 85683 109850 126750 142805 164775 171366 274625 285610 329550 428415 549250 714025 823875 856830 1428050 1647750 2142075 3570125 4284150 7140250 10710375 21420750
- Sum of all divisors σ(n): 57921552
- Sum of proper divisors (its aliquot sum) s(n): 36500802
- 21420750 is an abundant number, because the sum of its proper divisors (36500802) is greater than itself. Its abundance is 15080052
Bases of 21420750
- Binary: 10100011011011010110011102
- Hexadecimal: 0x146DACE
- Base-36: CR4CU
Squares and roots of 21420750
- 21420750 squared (214207502) is 458848530562500
- 21420750 cubed (214207503) is 9828879661046671875000
-
The
square root of 21420750 is 4628.2556109187 -
The
cube root of 21420750 is 277.7228143103
Scales and comparisons
How big is 21420750?- 21,420,750 seconds is equal to 35 weeks, 2 days, 22 hours, 12 minutes, 30 seconds.
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To count from 1 to 21,420,750 would take you about twenty-one 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 21420750 cubic inches would be around 23.1 feet tall.
Recreational maths with 21420750
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The information we have on file for 21420750 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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