21047460
21,047,460 is an even composite number composed of five prime numbers multiplied together.
21047460 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21047460:
22 × 3 × 5 × 72 × 7159
(2 × 2 × 3 × 5 × 7 × 7 × 7159)See below for interesting mathematical facts about the number 21047460 from the Numbermatics database.
Names of 21047460
- Cardinal: 21047460 can be written as Twenty-one million, forty-seven thousand, four hundred sixty.
Scientific notation
- Scientific notation: 2.104746 × 107
Factors of 21047460
Divisors of 21047460
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 140 147 196 210 245 294 420 490 588 735 980 1470 2940 7159 14318 21477 28636 35795 42954 50113 71590 85908 100226 107385 143180 150339 200452 214770 250565 300678 350791 429540 501130 601356 701582 751695 1002260 1052373 1403164 1503390 1753955 2104746 3006780 3507910 4209492 5261865 7015820 10523730 21047460
- Sum of all divisors σ(n): 68564160
- Sum of proper divisors (its aliquot sum) s(n): 47516700
- 21047460 is an abundant number, because the sum of its proper divisors (47516700) is greater than itself. Its abundance is 26469240
Bases of 21047460
- Binary: 10100000100101000101001002
- Hexadecimal: 0x14128A4
- Base-36: CJ4BO
Squares and roots of 21047460
- 21047460 squared (210474602) is 442995572451600
- 21047460 cubed (210474603) is 9323931591352152936000
-
The
square root of 21047460 is 4587.7510830471 -
The
cube root of 21047460 is 276.1001002171
Scales and comparisons
How big is 21047460?- 21,047,460 seconds is equal to 34 weeks, 5 days, 14 hours, 31 minutes.
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To count from 1 to 21,047,460 would take you about nine 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 21047460 cubic inches would be around 23 feet tall.
Recreational maths with 21047460
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The information we have on file for 21047460 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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