28378728
28,378,728 is an even composite number composed of four prime numbers multiplied together.
28378728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 28378728:
23 × 33 × 7 × 1372
(2 × 2 × 2 × 3 × 3 × 3 × 7 × 137 × 137)See below for interesting mathematical facts about the number 28378728 from the Numbermatics database.
Names of 28378728
- Cardinal: 28378728 can be written as Twenty-eight million, three hundred seventy-eight thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8378728 × 107
Factors of 28378728
Divisors of 28378728
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 137 168 189 216 252 274 378 411 504 548 756 822 959 1096 1233 1512 1644 1918 2466 2877 3288 3699 3836 4932 5754 7398 7672 8631 9864 11508 14796 17262 18769 23016 25893 29592 34524 37538 51786 56307 69048 75076 103572 112614 131383 150152 168921 207144 225228 262766 337842 394149 450456 506763 525532 675684 788298 1013526 1051064 1182447 1351368 1576596 2027052 2364894 3153192 3547341 4054104 4729788 7094682 9459576 14189364 28378728
- Sum of all divisors σ(n): 90753600
- Sum of proper divisors (its aliquot sum) s(n): 62374872
- 28378728 is an abundant number, because the sum of its proper divisors (62374872) is greater than itself. Its abundance is 33996144
Bases of 28378728
- Binary: 11011000100000110011010002
- Hexadecimal: 0x1B10668
- Base-36: GW960
Squares and roots of 28378728
- 28378728 squared (283787282) is 805352202897984
- 28378728 cubed (283787283) is 22854871110242699684352
-
The
square root of 28378728 is 5327.1688540913 -
The
cube root of 28378728 is 305.0218671055
Scales and comparisons
How big is 28378728?- 28,378,728 seconds is equal to 46 weeks, 6 days, 10 hours, 58 minutes, 48 seconds.
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To count from 1 to 28,378,728 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 28378728 cubic inches would be around 25.4 feet tall.
Recreational maths with 28378728
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The information we have on file for 28378728 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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