21485880
21,485,880 is an even composite number composed of five prime numbers multiplied together.
21485880 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 21485880:
23 × 32 × 5 × 13 × 4591
(2 × 2 × 2 × 3 × 3 × 5 × 13 × 4591)See below for interesting mathematical facts about the number 21485880 from the Numbermatics database.
Names of 21485880
- Cardinal: 21485880 can be written as Twenty-one million, four hundred eighty-five thousand, eight hundred eighty.
Scientific notation
- Scientific notation: 2.148588 × 107
Factors of 21485880
Divisors of 21485880
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 30 36 39 40 45 52 60 65 72 78 90 104 117 120 130 156 180 195 234 260 312 360 390 468 520 585 780 936 1170 1560 2340 4591 4680 9182 13773 18364 22955 27546 36728 41319 45910 55092 59683 68865 82638 91820 110184 119366 137730 165276 179049 183640 206595 238732 275460 298415 330552 358098 413190 477464 537147 550920 596830 716196 826380 895245 1074294 1193660 1432392 1652760 1790490 2148588 2387320 2685735 3580980 4297176 5371470 7161960 10742940 21485880
- Sum of all divisors σ(n): 75216960
- Sum of proper divisors (its aliquot sum) s(n): 53731080
- 21485880 is an abundant number, because the sum of its proper divisors (53731080) is greater than itself. Its abundance is 32245200
Bases of 21485880
- Binary: 10100011111011001001110002
- Hexadecimal: 0x147D938
- Base-36: CSIM0
Squares and roots of 21485880
- 21485880 squared (214858802) is 461643039374400
- 21485880 cubed (214858803) is 9918806946833633472000
-
The
square root of 21485880 is 4635.2863989187 -
The
cube root of 21485880 is 278.0040024957
Scales and comparisons
How big is 21485880?- 21,485,880 seconds is equal to 35 weeks, 3 days, 16 hours, 18 minutes.
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To count from 1 to 21,485,880 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 21485880 cubic inches would be around 23.2 feet tall.
Recreational maths with 21485880
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The information we have on file for 21485880 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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