28938728
28,938,728 is an even composite number composed of five prime numbers multiplied together.
28938728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 28938728:
23 × 7 × 13 × 127 × 313
(2 × 2 × 2 × 7 × 13 × 127 × 313)See below for interesting mathematical facts about the number 28938728 from the Numbermatics database.
Names of 28938728
- Cardinal: 28938728 can be written as Twenty-eight million, nine hundred thirty-eight thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8938728 × 107
Factors of 28938728
Divisors of 28938728
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 4 7 8 13 14 26 28 52 56 91 104 127 182 254 313 364 508 626 728 889 1016 1252 1651 1778 2191 2504 3302 3556 4069 4382 6604 7112 8138 8764 11557 13208 16276 17528 23114 28483 32552 39751 46228 56966 79502 92456 113932 159004 227864 278257 318008 516763 556514 1033526 1113028 2067052 2226056 3617341 4134104 7234682 14469364 28938728
- Sum of all divisors σ(n): 67522560
- Sum of proper divisors (its aliquot sum) s(n): 38583832
- 28938728 is an abundant number, because the sum of its proper divisors (38583832) is greater than itself. Its abundance is 9645104
Bases of 28938728
- Binary: 11011100110010001111010002
- Hexadecimal: 0x1B991E8
- Base-36: H899K
Squares and roots of 28938728
- 28938728 squared (289387282) is 837449978257984
- 28938728 cubed (289387283) is 24234737134413712804352
-
The
square root of 28938728 is 5379.4728366263 -
The
cube root of 28938728 is 307.0151541431
Scales and comparisons
How big is 28938728?- 28,938,728 seconds is equal to 47 weeks, 5 days, 22 hours, 32 minutes, 8 seconds.
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To count from 1 to 28,938,728 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 28938728 cubic inches would be around 25.6 feet tall.
Recreational maths with 28938728
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The information we have on file for 28938728 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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