21399430
21,399,430 is an even composite number composed of six prime numbers multiplied together.
21399430 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21399430:
2 × 5 × 13 × 17 × 23 × 421
See below for interesting mathematical facts about the number 21399430 from the Numbermatics database.
Names of 21399430
- Cardinal: 21399430 can be written as Twenty-one million, three hundred ninety-nine thousand, four hundred thirty.
Scientific notation
- Scientific notation: 2.139943 × 107
Factors of 21399430
Divisors of 21399430
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 5 10 13 17 23 26 34 46 65 85 115 130 170 221 230 299 391 421 442 598 782 842 1105 1495 1955 2105 2210 2990 3910 4210 5083 5473 7157 9683 10166 10946 14314 19366 25415 27365 35785 48415 50830 54730 71570 93041 96830 125879 164611 186082 251758 329222 465205 629395 823055 930410 1258790 1646110 2139943 4279886 10699715 21399430
- Sum of all divisors σ(n): 45940608
- Sum of proper divisors (its aliquot sum) s(n): 24541178
- 21399430 is an abundant number, because the sum of its proper divisors (24541178) is greater than itself. Its abundance is 3141748
Bases of 21399430
- Binary: 10100011010000111100001102
- Hexadecimal: 0x1468786
- Base-36: CQNWM
Squares and roots of 21399430
- 21399430 squared (213994302) is 457935604324900
- 21399430 cubed (213994303) is 9799560909258394807000
-
The
square root of 21399430 is 4625.9517939555 -
The
cube root of 21399430 is 277.6306448659
Scales and comparisons
How big is 21399430?- 21,399,430 seconds is equal to 35 weeks, 2 days, 16 hours, 17 minutes, 10 seconds.
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To count from 1 to 21,399,430 would take you about twelve 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 21399430 cubic inches would be around 23.1 feet tall.
Recreational maths with 21399430
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The information we have on file for 21399430 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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