21389904
21,389,904 is an even composite number composed of four prime numbers multiplied together.
What does the number 21389904 look like?
This visualization shows the relationship between its 4 prime factors (large circles) and 60 divisors.
21389904 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21389904:
24 × 32 × 89 × 1669
(2 × 2 × 2 × 2 × 3 × 3 × 89 × 1669)See below for interesting mathematical facts about the number 21389904 from the Numbermatics database.
Names of 21389904
- Cardinal: 21389904 can be written as Twenty-one million, three hundred eighty-nine thousand, nine hundred four.
Scientific notation
- Scientific notation: 2.1389904 × 107
Factors of 21389904
Divisors of 21389904
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 36 48 72 89 144 178 267 356 534 712 801 1068 1424 1602 1669 2136 3204 3338 4272 5007 6408 6676 10014 12816 13352 15021 20028 26704 30042 40056 60084 80112 120168 148541 240336 297082 445623 594164 891246 1188328 1336869 1782492 2376656 2673738 3564984 5347476 7129968 10694952 21389904
- Sum of all divisors σ(n): 60570900
- Sum of proper divisors (its aliquot sum) s(n): 39180996
- 21389904 is an abundant number, because the sum of its proper divisors (39180996) is greater than itself. Its abundance is 17791092
Bases of 21389904
- Binary: 10100011001100010010100002
- Hexadecimal: 0x1466250
- Base-36: CQGK0
Squares and roots of 21389904
- 21389904 squared (213899042) is 457527993129216
- 21389904 cubed (213899043) is 9786479850346589835264
-
The
square root of 21389904 is 4624.9220533973 -
The
cube root of 21389904 is 277.5894428019
Scales and comparisons
How big is 21389904?- 21,389,904 seconds is equal to 35 weeks, 2 days, 13 hours, 38 minutes, 24 seconds.
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To count from 1 to 21,389,904 would take you about eight 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 21389904 cubic inches would be around 23.1 feet tall.
Recreational maths with 21389904
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The information we have on file for 21389904 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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