21072128
21,072,128 is an even composite number composed of four prime numbers multiplied together.
21072128 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21072128:
28 × 7 × 11 × 1069
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 1069)See below for interesting mathematical facts about the number 21072128 from the Numbermatics database.
Names of 21072128
- Cardinal: 21072128 can be written as Twenty-one million, seventy-two thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1072128 × 107
Factors of 21072128
Divisors of 21072128
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 128 154 176 224 256 308 352 448 616 704 896 1069 1232 1408 1792 2138 2464 2816 4276 4928 7483 8552 9856 11759 14966 17104 19712 23518 29932 34208 47036 59864 68416 82313 94072 119728 136832 164626 188144 239456 273664 329252 376288 478912 658504 752576 957824 1317008 1505152 1915648 2634016 3010304 5268032 10536064 21072128
- Sum of all divisors σ(n): 52489920
- Sum of proper divisors (its aliquot sum) s(n): 31417792
- 21072128 is an abundant number, because the sum of its proper divisors (31417792) is greater than itself. Its abundance is 10345664
Bases of 21072128
- Binary: 10100000110001001000000002
- Hexadecimal: 0x1418900
- Base-36: CJNCW
Squares and roots of 21072128
- 21072128 squared (210721282) is 444034578448384
- 21072128 cubed (210721283) is 9356753473490389041152
-
The
square root of 21072128 is 4590.4387589859 -
The
cube root of 21072128 is 276.2079228585
Scales and comparisons
How big is 21072128?- 21,072,128 seconds is equal to 34 weeks, 5 days, 21 hours, 22 minutes, 8 seconds.
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To count from 1 to 21,072,128 would take you about twenty 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 21072128 cubic inches would be around 23 feet tall.
Recreational maths with 21072128
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The information we have on file for 21072128 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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