21040768
21,040,768 is an even composite number composed of four prime numbers multiplied together.
21040768 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 21040768:
27 × 7 × 23 × 1021
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 23 × 1021)See below for interesting mathematical facts about the number 21040768 from the Numbermatics database.
Names of 21040768
- Cardinal: 21040768 can be written as Twenty-one million, forty thousand, seven hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1040768 × 107
Factors of 21040768
Divisors of 21040768
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 7 8 14 16 23 28 32 46 56 64 92 112 128 161 184 224 322 368 448 644 736 896 1021 1288 1472 2042 2576 2944 4084 5152 7147 8168 10304 14294 16336 20608 23483 28588 32672 46966 57176 65344 93932 114352 130688 164381 187864 228704 328762 375728 457408 657524 751456 914816 1315048 1502912 2630096 3005824 5260192 10520384 21040768
- Sum of all divisors σ(n): 50037120
- Sum of proper divisors (its aliquot sum) s(n): 28996352
- 21040768 is an abundant number, because the sum of its proper divisors (28996352) is greater than itself. Its abundance is 7955584
Bases of 21040768
- Binary: 10100000100001110100000002
- Hexadecimal: 0x1410E80
- Base-36: CIZ5S
Squares and roots of 21040768
- 21040768 squared (210407682) is 442713918029824
- 21040768 cubed (210407683) is 9315040839636543864832
-
The
square root of 21040768 is 4587.0216916863 -
The
cube root of 21040768 is 276.0708352807
Scales and comparisons
How big is 21040768?- 21,040,768 seconds is equal to 34 weeks, 5 days, 12 hours, 39 minutes, 28 seconds.
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To count from 1 to 21,040,768 would take you about six 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 21040768 cubic inches would be around 23 feet tall.
Recreational maths with 21040768
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The information we have on file for 21040768 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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