28512720
28,512,720 is an even composite number composed of four prime numbers multiplied together.
28512720 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 28512720:
24 × 32 × 5 × 1992
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 199 × 199)See below for interesting mathematical facts about the number 28512720 from the Numbermatics database.
Names of 28512720
- Cardinal: 28512720 can be written as Twenty-eight million, five hundred twelve thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.851272 × 107
Factors of 28512720
Divisors of 28512720
- Number of divisors d(n): 90
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 199 240 360 398 597 720 796 995 1194 1592 1791 1990 2388 2985 3184 3582 3980 4776 5970 7164 7960 8955 9552 11940 14328 15920 17910 23880 28656 35820 39601 47760 71640 79202 118803 143280 158404 198005 237606 316808 356409 396010 475212 594015 633616 712818 792020 950424 1188030 1425636 1584040 1782045 1900848 2376060 2851272 3168080 3564090 4752120 5702544 7128180 9504240 14256360 28512720
- Sum of all divisors σ(n): 96238818
- Sum of proper divisors (its aliquot sum) s(n): 67726098
- 28512720 is an abundant number, because the sum of its proper divisors (67726098) is greater than itself. Its abundance is 39213378
Bases of 28512720
- Binary: 11011001100010001110100002
- Hexadecimal: 0x1B311D0
- Base-36: GZ4K0
Squares and roots of 28512720
- 28512720 squared (285127202) is 812975201798400
- 28512720 cubed (285127203) is 23180134295821275648000
-
The
square root of 28512720 is 5339.7303302693 -
The
cube root of 28512720 is 305.5011736949
Scales and comparisons
How big is 28512720?- 28,512,720 seconds is equal to 47 weeks, 1 day, 12 minutes.
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To count from 1 to 28,512,720 would take you about eighteen 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 28512720 cubic inches would be around 25.5 feet tall.
Recreational maths with 28512720
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The information we have on file for 28512720 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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