21147520
21,147,520 is an even composite number composed of four prime numbers multiplied together.
21147520 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 21147520:
27 × 5 × 173 × 191
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 173 × 191)See below for interesting mathematical facts about the number 21147520 from the Numbermatics database.
Names of 21147520
- Cardinal: 21147520 can be written as Twenty-one million, one hundred forty-seven thousand, five hundred twenty.
Scientific notation
- Scientific notation: 2.114752 × 107
Factors of 21147520
Divisors of 21147520
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 80 128 160 173 191 320 346 382 640 692 764 865 955 1384 1528 1730 1910 2768 3056 3460 3820 5536 6112 6920 7640 11072 12224 13840 15280 22144 24448 27680 30560 33043 55360 61120 66086 110720 122240 132172 165215 264344 330430 528688 660860 1057376 1321720 2114752 2643440 4229504 5286880 10573760 21147520
- Sum of all divisors σ(n): 51114240
- Sum of proper divisors (its aliquot sum) s(n): 29966720
- 21147520 is an abundant number, because the sum of its proper divisors (29966720) is greater than itself. Its abundance is 8819200
Bases of 21147520
- Binary: 10100001010101111100000002
- Hexadecimal: 0x142AF80
- Base-36: CL9J4
Squares and roots of 21147520
- 21147520 squared (211475202) is 447217602150400
- 21147520 cubed (211475203) is 9457543185827627008000
-
The
square root of 21147520 is 4598.6432781855 -
The
cube root of 21147520 is 276.5369369693
Scales and comparisons
How big is 21147520?- 21,147,520 seconds is equal to 34 weeks, 6 days, 18 hours, 18 minutes, 40 seconds.
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To count from 1 to 21,147,520 would take you about three 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 21147520 cubic inches would be around 23 feet tall.
Recreational maths with 21147520
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The information we have on file for 21147520 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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