138918285
138,918,285 is an odd composite number composed of five prime numbers multiplied together.
138918285 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 138918285:
32 × 5 × 112 × 31 × 823
(3 × 3 × 5 × 11 × 11 × 31 × 823)See below for interesting mathematical facts about the number 138918285 from the Numbermatics database.
Names of 138918285
- Cardinal: 138918285 can be written as One hundred thirty-eight million, nine hundred eighteen thousand, two hundred eighty-five.
Scientific notation
- Scientific notation: 1.38918285 × 108
Factors of 138918285
Divisors of 138918285
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 5 9 11 15 31 33 45 55 93 99 121 155 165 279 341 363 465 495 605 823 1023 1089 1395 1705 1815 2469 3069 3751 4115 5115 5445 7407 9053 11253 12345 15345 18755 25513 27159 33759 37035 45265 56265 76539 81477 99583 127565 135795 168795 229617 280643 298749 382695 407385 497915 841929 896247 1148085 1403215 1493745 2525787 3087073 4209645 4481235 9261219 12628935 15435365 27783657 46306095 138918285
- Sum of all divisors σ(n): 273541632
- Sum of proper divisors (its aliquot sum) s(n): 134623347
- 138918285 is a deficient number, because the sum of its proper divisors (134623347) is less than itself. Its deficiency is 4294938
Bases of 138918285
- Binary: 10000100011110111001100011012
- Hexadecimal: 0x847B98D
- Base-36: 2API19
Squares and roots of 138918285
- 138918285 squared (1389182852) is 19298289907341225
- 138918285 cubed (1389182853) is 2680885337360651886799125
-
The
square root of 138918285 is 11786.3601251617 -
The
cube root of 138918285 is 517.9086179691
Scales and comparisons
How big is 138918285?- 138,918,285 seconds is equal to 4 years, 21 weeks, 4 days, 20 hours, 24 minutes, 45 seconds.
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To count from 1 to 138,918,285 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 138918285 cubic inches would be around 43.2 feet tall.
Recreational maths with 138918285
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The information we have on file for 138918285 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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