28656720
28,656,720 is an even composite number composed of four prime numbers multiplied together.
28656720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 28656720:
24 × 33 × 5 × 13267
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 13267)See below for interesting mathematical facts about the number 28656720 from the Numbermatics database.
Names of 28656720
- Cardinal: 28656720 can be written as Twenty-eight million, six hundred fifty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.865672 × 107
Factors of 28656720
Divisors of 28656720
- Number of divisors d(n): 80
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 90 108 120 135 144 180 216 240 270 360 432 540 720 1080 2160 13267 26534 39801 53068 66335 79602 106136 119403 132670 159204 199005 212272 238806 265340 318408 358209 398010 477612 530680 597015 636816 716418 796020 955224 1061360 1194030 1432836 1592040 1791045 1910448 2388060 2865672 3184080 3582090 4776120 5731344 7164180 9552240 14328360 28656720
- Sum of all divisors σ(n): 98713920
- Sum of proper divisors (its aliquot sum) s(n): 70057200
- 28656720 is an abundant number, because the sum of its proper divisors (70057200) is greater than itself. Its abundance is 41400480
Bases of 28656720
- Binary: 11011010101000100010100002
- Hexadecimal: 0x1B54450
- Base-36: H27O0
Squares and roots of 28656720
- 28656720 squared (286567202) is 821207601158400
- 28656720 cubed (286567203) is 23533116288267944448000
-
The
square root of 28656720 is 5353.1971755205 -
The
cube root of 28656720 is 306.0146090679
Scales and comparisons
How big is 28656720?- 28,656,720 seconds is equal to 47 weeks, 2 days, 16 hours, 12 minutes.
-
To count from 1 to 28,656,720 would take you about nineteen 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 28656720 cubic inches would be around 25.5 feet tall.
Recreational maths with 28656720
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The information we have on file for 28656720 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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