28720125
28,720,125 is an odd composite number composed of four prime numbers multiplied together.
28720125 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 28720125:
32 × 53 × 72 × 521
(3 × 3 × 5 × 5 × 5 × 7 × 7 × 521)See below for interesting mathematical facts about the number 28720125 from the Numbermatics database.
Names of 28720125
- Cardinal: 28720125 can be written as Twenty-eight million, seven hundred twenty thousand, one hundred twenty-five.
Scientific notation
- Scientific notation: 2.8720125 × 107
Factors of 28720125
Divisors of 28720125
- Number of divisors d(n): 72
-
Complete list of divisors:
1 3 5 7 9 15 21 25 35 45 49 63 75 105 125 147 175 225 245 315 375 441 521 525 735 875 1125 1225 1563 1575 2205 2605 2625 3647 3675 4689 6125 7815 7875 10941 11025 13025 18235 18375 23445 25529 32823 39075 54705 55125 65125 76587 91175 117225 127645 164115 195375 229761 273525 382935 455875 586125 638225 820575 1148805 1367625 1914675 3191125 4102875 5744025 9573375 28720125
- Sum of all divisors σ(n): 60341112
- Sum of proper divisors (its aliquot sum) s(n): 31620987
- 28720125 is an abundant number, because the sum of its proper divisors (31620987) is greater than itself. Its abundance is 2900862
Bases of 28720125
- Binary: 11011011000111011111111012
- Hexadecimal: 0x1B63BFD
- Base-36: H3KL9
Squares and roots of 28720125
- 28720125 squared (287201252) is 824845580015625
- 28720125 cubed (287201253) is 23689668163746251953125
-
The
square root of 28720125 is 5359.1160651735 -
The
cube root of 28720125 is 306.2401357365
Scales and comparisons
How big is 28720125?- 28,720,125 seconds is equal to 47 weeks, 3 days, 9 hours, 48 minutes, 45 seconds.
-
To count from 1 to 28,720,125 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 28720125 cubic inches would be around 25.5 feet tall.
Recreational maths with 28720125
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The information we have on file for 28720125 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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