13128864
13,128,864 is an even composite number composed of four prime numbers multiplied together.
13128864 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 13128864:
25 × 3 × 72 × 2791
(2 × 2 × 2 × 2 × 2 × 3 × 7 × 7 × 2791)See below for interesting mathematical facts about the number 13128864 from the Numbermatics database.
Names of 13128864
- Cardinal: 13128864 can be written as Thirteen million, one hundred twenty-eight thousand, eight hundred sixty-four.
Scientific notation
- Scientific notation: 1.3128864 × 107
Factors of 13128864
Divisors of 13128864
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 49 56 84 96 98 112 147 168 196 224 294 336 392 588 672 784 1176 1568 2352 2791 4704 5582 8373 11164 16746 19537 22328 33492 39074 44656 58611 66984 78148 89312 117222 133968 136759 156296 234444 267936 273518 312592 410277 468888 547036 625184 820554 937776 1094072 1641108 1875552 2188144 3282216 4376288 6564432 13128864
- Sum of all divisors σ(n): 40104288
- Sum of proper divisors (its aliquot sum) s(n): 26975424
- 13128864 is an abundant number, because the sum of its proper divisors (26975424) is greater than itself. Its abundance is 13846560
Bases of 13128864
- Binary: 1100100001010100101000002
- Hexadecimal: 0xC854A0
- Base-36: 7TEAO
Squares and roots of 13128864
- 13128864 squared (131288642) is 172367069930496
- 13128864 cubed (131288643) is 2262983819195971436544
-
The
square root of 13128864 is 3623.3774299679 -
The
cube root of 13128864 is 235.9078448963
Scales and comparisons
How big is 13128864?- 13,128,864 seconds is equal to 21 weeks, 4 days, 22 hours, 54 minutes, 24 seconds.
-
To count from 1 to 13,128,864 would take you about thirty-two weeks!
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 13128864 cubic inches would be around 19.7 feet tall.
Recreational maths with 13128864
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