21139768
21,139,768 is an even composite number composed of five prime numbers multiplied together.
21139768 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21139768:
23 × 13 × 31 × 79 × 83
(2 × 2 × 2 × 13 × 31 × 79 × 83)See below for interesting mathematical facts about the number 21139768 from the Numbermatics database.
Names of 21139768
- Cardinal: 21139768 can be written as Twenty-one million, one hundred thirty-nine thousand, seven hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1139768 × 107
Factors of 21139768
Divisors of 21139768
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 4 8 13 26 31 52 62 79 83 104 124 158 166 248 316 332 403 632 664 806 1027 1079 1612 2054 2158 2449 2573 3224 4108 4316 4898 5146 6557 8216 8632 9796 10292 13114 19592 20584 26228 31837 33449 52456 63674 66898 85241 127348 133796 170482 203267 254696 267592 340964 406534 681928 813068 1626136 2642471 5284942 10569884 21139768
- Sum of all divisors σ(n): 45158400
- Sum of proper divisors (its aliquot sum) s(n): 24018632
- 21139768 is an abundant number, because the sum of its proper divisors (24018632) is greater than itself. Its abundance is 2878864
Bases of 21139768
- Binary: 10100001010010001001110002
- Hexadecimal: 0x1429138
- Base-36: CL3JS
Squares and roots of 21139768
- 21139768 squared (211397682) is 446889791093824
- 21139768 cubed (211397683) is 9447146505291905592832
-
The
square root of 21139768 is 4597.8003436425 -
The
cube root of 21139768 is 276.5031429937
Scales and comparisons
How big is 21139768?- 21,139,768 seconds is equal to 34 weeks, 6 days, 16 hours, 9 minutes, 28 seconds.
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To count from 1 to 21,139,768 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 21139768 cubic inches would be around 23 feet tall.
Recreational maths with 21139768
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The information we have on file for 21139768 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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