128972736
128,972,736 is an even composite number composed of three prime numbers multiplied together.
128972736 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighty-four divisors.
Prime factorization of 128972736:
26 × 35 × 8293
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 8293)See below for interesting mathematical facts about the number 128972736 from the Numbermatics database.
Names of 128972736
- Cardinal: 128972736 can be written as One hundred twenty-eight million, nine hundred seventy-two thousand, seven hundred thirty-six.
Scientific notation
- Scientific notation: 1.28972736 × 108
Factors of 128972736
Divisors of 128972736
- Number of divisors d(n): 84
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 96 108 144 162 192 216 243 288 324 432 486 576 648 864 972 1296 1728 1944 2592 3888 5184 7776 8293 15552 16586 24879 33172 49758 66344 74637 99516 132688 149274 199032 223911 265376 298548 398064 447822 530752 597096 671733 796128 895644 1194192 1343466 1592256 1791288 2015199 2388384 2686932 3582576 4030398 4776768 5373864 7165152 8060796 10747728 14330304 16121592 21495456 32243184 42990912 64486368 128972736
- Sum of all divisors σ(n): 383415032
- Sum of proper divisors (its aliquot sum) s(n): 254442296
- 128972736 is an abundant number, because the sum of its proper divisors (254442296) is greater than itself. Its abundance is 125469560
Bases of 128972736
- Binary: 1111010111111110111110000002
- Hexadecimal: 0x7AFF7C0
- Base-36: 24SC00
Squares and roots of 128972736
- 128972736 squared (1289727362) is 16633966631325696
- 128972736 cubed (1289727363) is 2145328186974778320224256
-
The
square root of 128972736 is 11356.6163975015 -
The
cube root of 128972736 is 505.2418356133
Scales and comparisons
How big is 128972736?- 128,972,736 seconds is equal to 4 years, 5 weeks, 1 day, 17 hours, 45 minutes, 36 seconds.
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To count from 1 to 128,972,736 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 128972736 cubic inches would be around 42.1 feet tall.
Recreational maths with 128972736
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