21404240
21,404,240 is an even composite number composed of five prime numbers multiplied together.
21404240 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 21404240:
24 × 5 × 11 × 13 × 1871
(2 × 2 × 2 × 2 × 5 × 11 × 13 × 1871)See below for interesting mathematical facts about the number 21404240 from the Numbermatics database.
Names of 21404240
- Cardinal: 21404240 can be written as Twenty-one million, four hundred four thousand, two hundred forty.
Scientific notation
- Scientific notation: 2.140424 × 107
Factors of 21404240
Divisors of 21404240
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 8 10 11 13 16 20 22 26 40 44 52 55 65 80 88 104 110 130 143 176 208 220 260 286 440 520 572 715 880 1040 1144 1430 1871 2288 2860 3742 5720 7484 9355 11440 14968 18710 20581 24323 29936 37420 41162 48646 74840 82324 97292 102905 121615 149680 164648 194584 205810 243230 267553 329296 389168 411620 486460 535106 823240 972920 1070212 1337765 1646480 1945840 2140424 2675530 4280848 5351060 10702120 21404240
- Sum of all divisors σ(n): 58496256
- Sum of proper divisors (its aliquot sum) s(n): 37092016
- 21404240 is an abundant number, because the sum of its proper divisors (37092016) is greater than itself. Its abundance is 15687776
Bases of 21404240
- Binary: 10100011010011010010100002
- Hexadecimal: 0x1469A50
- Base-36: CQRM8
Squares and roots of 21404240
- 21404240 squared (214042402) is 458141489977600
- 21404240 cubed (214042403) is 9806170405438145024000
-
The
square root of 21404240 is 4626.4716577539 -
The
cube root of 21404240 is 277.6514445375
Scales and comparisons
How big is 21404240?- 21,404,240 seconds is equal to 35 weeks, 2 days, 17 hours, 37 minutes, 20 seconds.
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To count from 1 to 21,404,240 would take you about fourteen 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 21404240 cubic inches would be around 23.1 feet tall.
Recreational maths with 21404240
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The information we have on file for 21404240 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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