21087040
21,087,040 is an even composite number composed of five prime numbers multiplied together.
21087040 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21087040:
26 × 5 × 13 × 37 × 137
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 13 × 37 × 137)See below for interesting mathematical facts about the number 21087040 from the Numbermatics database.
Names of 21087040
- Cardinal: 21087040 can be written as Twenty-one million, eighty-seven thousand and forty.
Scientific notation
- Scientific notation: 2.108704 × 107
Factors of 21087040
Divisors of 21087040
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 26 32 37 40 52 64 65 74 80 104 130 137 148 160 185 208 260 274 296 320 370 416 481 520 548 592 685 740 832 962 1040 1096 1184 1370 1480 1781 1924 2080 2192 2368 2405 2740 2960 3562 3848 4160 4384 4810 5069 5480 5920 7124 7696 8768 8905 9620 10138 10960 11840 14248 15392 17810 19240 20276 21920 25345 28496 30784 35620 38480 40552 43840 50690 56992 65897 71240 76960 81104 101380 113984 131794 142480 153920 162208 202760 263588 284960 324416 329485 405520 527176 569920 658970 811040 1054352 1317940 1622080 2108704 2635880 4217408 5271760 10543520 21087040
- Sum of all divisors σ(n): 55942992
- Sum of proper divisors (its aliquot sum) s(n): 34855952
- 21087040 is an abundant number, because the sum of its proper divisors (34855952) is greater than itself. Its abundance is 13768912
Bases of 21087040
- Binary: 10100000111000011010000002
- Hexadecimal: 0x141C340
- Base-36: CJYV4
Squares and roots of 21087040
- 21087040 squared (210870402) is 444663255961600
- 21087040 cubed (210870403) is 9376631864992497664000
-
The
square root of 21087040 is 4592.0627173417 -
The
cube root of 21087040 is 276.2730616893
Scales and comparisons
How big is 21087040?- 21,087,040 seconds is equal to 34 weeks, 6 days, 1 hour, 30 minutes, 40 seconds.
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To count from 1 to 21,087,040 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 21087040 cubic inches would be around 23 feet tall.
Recreational maths with 21087040
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The information we have on file for 21087040 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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