21139872
21,139,872 is an even composite number composed of four prime numbers multiplied together.
What does the number 21139872 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 72 divisors.
21139872 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 21139872:
25 × 3 × 132 × 1303
(2 × 2 × 2 × 2 × 2 × 3 × 13 × 13 × 1303)See below for interesting mathematical facts about the number 21139872 from the Numbermatics database.
Names of 21139872
- Cardinal: 21139872 can be written as Twenty-one million, one hundred thirty-nine thousand, eight hundred seventy-two.
Scientific notation
- Scientific notation: 2.1139872 × 107
Factors of 21139872
Divisors of 21139872
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 169 208 312 338 416 507 624 676 1014 1248 1303 1352 2028 2606 2704 3909 4056 5212 5408 7818 8112 10424 15636 16224 16939 20848 31272 33878 41696 50817 62544 67756 101634 125088 135512 203268 220207 271024 406536 440414 542048 660621 813072 880828 1321242 1626144 1761656 2642484 3523312 5284968 7046624 10569936 21139872
- Sum of all divisors σ(n): 60135264
- Sum of proper divisors (its aliquot sum) s(n): 38995392
- 21139872 is an abundant number, because the sum of its proper divisors (38995392) is greater than itself. Its abundance is 17855520
Bases of 21139872
- Binary: 10100001010010001101000002
- Hexadecimal: 0x14291A0
- Base-36: CL3MO
Squares and roots of 21139872
- 21139872 squared (211398722) is 446894188176384
- 21139872 cubed (211398723) is 9447285935592671182848
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The
square root of 21139872 is 4597.8116533847 -
The
cube root of 21139872 is 276.5035964243
Scales and comparisons
How big is 21139872?- 21,139,872 seconds is equal to 34 weeks, 6 days, 16 hours, 11 minutes, 12 seconds.
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To count from 1 to 21,139,872 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 21139872 cubic inches would be around 23 feet tall.
Recreational maths with 21139872
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"Number 21139872 - Facts about the integer". Numbermatics.com. 2024. Web. 9 May 2024.
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The information we have on file for 21139872 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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