128929728
128,929,728 is an even composite number composed of four prime numbers multiplied together.
128929728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of fifty-six divisors.
Prime factorization of 128929728:
26 × 3 × 139 × 4831
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 139 × 4831)See below for interesting mathematical facts about the number 128929728 from the Numbermatics database.
Names of 128929728
- Cardinal: 128929728 can be written as One hundred twenty-eight million, nine hundred twenty-nine thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.28929728 × 108
Factors of 128929728
Divisors of 128929728
- Number of divisors d(n): 56
-
Complete list of divisors:
1 2 3 4 6 8 12 16 24 32 48 64 96 139 192 278 417 556 834 1112 1668 2224 3336 4448 4831 6672 8896 9662 13344 14493 19324 26688 28986 38648 57972 77296 115944 154592 231888 309184 463776 671509 927552 1343018 2014527 2686036 4029054 5372072 8058108 10744144 16116216 21488288 32232432 42976576 64464864 128929728
- Sum of all divisors σ(n): 343651840
- Sum of proper divisors (its aliquot sum) s(n): 214722112
- 128929728 is an abundant number, because the sum of its proper divisors (214722112) is greater than itself. Its abundance is 85792384
Bases of 128929728
- Binary: 1111010111101001111110000002
- Hexadecimal: 0x7AF4FC0
- Base-36: 24RETC
Squares and roots of 128929728
- 128929728 squared (1289297282) is 16622874762153984
- 128929728 cubed (1289297283) is 2143182721662577851236352
-
The
square root of 128929728 is 11354.7227178827 -
The
cube root of 128929728 is 505.1856690743
Scales and comparisons
How big is 128929728?- 128,929,728 seconds is equal to 4 years, 5 weeks, 1 day, 5 hours, 48 minutes, 48 seconds.
-
To count from 1 to 128,929,728 would take you about six years!
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 128929728 cubic inches would be around 42.1 feet tall.
Recreational maths with 128929728
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The information we have on file for 128929728 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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