21351040
21,351,040 is an even composite number composed of four prime numbers multiplied together.
21351040 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21351040:
27 × 5 × 73 × 457
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 73 × 457)See below for interesting mathematical facts about the number 21351040 from the Numbermatics database.
Names of 21351040
- Cardinal: 21351040 can be written as Twenty-one million, three hundred fifty-one thousand and forty.
Scientific notation
- Scientific notation: 2.135104 × 107
Factors of 21351040
Divisors of 21351040
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 73 80 128 146 160 292 320 365 457 584 640 730 914 1168 1460 1828 2285 2336 2920 3656 4570 4672 5840 7312 9140 9344 11680 14624 18280 23360 29248 33361 36560 46720 58496 66722 73120 133444 146240 166805 266888 292480 333610 533776 667220 1067552 1334440 2135104 2668880 4270208 5337760 10675520 21351040
- Sum of all divisors σ(n): 51854760
- Sum of proper divisors (its aliquot sum) s(n): 30503720
- 21351040 is an abundant number, because the sum of its proper divisors (30503720) is greater than itself. Its abundance is 9152680
Bases of 21351040
- Binary: 10100010111001010100000002
- Hexadecimal: 0x145CA80
- Base-36: CPMKG
Squares and roots of 21351040
- 21351040 squared (213510402) is 455866909081600
- 21351040 cubed (213510403) is 9733232610477604864000
-
The
square root of 21351040 is 4620.7185588391 -
The
cube root of 21351040 is 277.4212205017
Scales and comparisons
How big is 21351040?- 21,351,040 seconds is equal to 35 weeks, 2 days, 2 hours, 50 minutes, 40 seconds.
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To count from 1 to 21,351,040 would take you about six 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 21351040 cubic inches would be around 23.1 feet tall.
Recreational maths with 21351040
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The information we have on file for 21351040 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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