21057680
21,057,680 is an even composite number composed of five prime numbers multiplied together.
21057680 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 21057680:
24 × 5 × 7 × 31 × 1213
(2 × 2 × 2 × 2 × 5 × 7 × 31 × 1213)See below for interesting mathematical facts about the number 21057680 from the Numbermatics database.
Names of 21057680
- Cardinal: 21057680 can be written as Twenty-one million, fifty-seven thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.105768 × 107
Factors of 21057680
Divisors of 21057680
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 31 35 40 56 62 70 80 112 124 140 155 217 248 280 310 434 496 560 620 868 1085 1213 1240 1736 2170 2426 2480 3472 4340 4852 6065 8491 8680 9704 12130 16982 17360 19408 24260 33964 37603 42455 48520 67928 75206 84910 97040 135856 150412 169820 188015 263221 300824 339640 376030 526442 601648 679280 752060 1052884 1316105 1504120 2105768 2632210 3008240 4211536 5264420 10528840 21057680
- Sum of all divisors σ(n): 57805824
- Sum of proper divisors (its aliquot sum) s(n): 36748144
- 21057680 is an abundant number, because the sum of its proper divisors (36748144) is greater than itself. Its abundance is 15690464
Bases of 21057680
- Binary: 10100000101010000100100002
- Hexadecimal: 0x1415090
- Base-36: CJC7K
Squares and roots of 21057680
- 21057680 squared (210576802) is 443425886982400
- 21057680 cubed (210576803) is 9337520431791544832000
-
The
square root of 21057680 is 4588.8647833641 -
The
cube root of 21057680 is 276.1447815615
Scales and comparisons
How big is 21057680?- 21,057,680 seconds is equal to 34 weeks, 5 days, 17 hours, 21 minutes, 20 seconds.
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To count from 1 to 21,057,680 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 21057680 cubic inches would be around 23 feet tall.
Recreational maths with 21057680
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The information we have on file for 21057680 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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