138795720
138,795,720 is an even composite number composed of five prime numbers multiplied together.
138795720 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 138795720:
23 × 3 × 5 × 7 × 165233
(2 × 2 × 2 × 3 × 5 × 7 × 165233)See below for interesting mathematical facts about the number 138795720 from the Numbermatics database.
Names of 138795720
- Cardinal: 138795720 can be written as One hundred thirty-eight million, seven hundred ninety-five thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.3879572 × 108
Factors of 138795720
Divisors of 138795720
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 28 30 35 40 42 56 60 70 84 105 120 140 168 210 280 420 840 165233 330466 495699 660932 826165 991398 1156631 1321864 1652330 1982796 2313262 2478495 3304660 3469893 3965592 4626524 4956990 5783155 6609320 6939786 9253048 9913980 11566310 13879572 17349465 19827960 23132620 27759144 34698930 46265240 69397860 138795720
- Sum of all divisors σ(n): 475873920
- Sum of proper divisors (its aliquot sum) s(n): 337078200
- 138795720 is an abundant number, because the sum of its proper divisors (337078200) is greater than itself. Its abundance is 198282480
Bases of 138795720
- Binary: 10000100010111011010110010002
- Hexadecimal: 0x845DAC8
- Base-36: 2AMVGO
Squares and roots of 138795720
- 138795720 squared (1387957202) is 19264251890318400
- 138795720 cubed (1387957203) is 2673795711378103357248000
-
The
square root of 138795720 is 11781.1595354617 -
The
cube root of 138795720 is 517.7562594627
Scales and comparisons
How big is 138795720?- 138,795,720 seconds is equal to 4 years, 21 weeks, 3 days, 10 hours, 22 minutes.
-
To count from 1 to 138,795,720 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 138795720 cubic inches would be around 43.1 feet tall.
Recreational maths with 138795720
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