138605985
138,605,985 is an odd composite number composed of five prime numbers multiplied together.
138605985 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 138605985:
35 × 5 × 7 × 43 × 379
(3 × 3 × 3 × 3 × 3 × 5 × 7 × 43 × 379)See below for interesting mathematical facts about the number 138605985 from the Numbermatics database.
Names of 138605985
- Cardinal: 138605985 can be written as One hundred thirty-eight million, six hundred five thousand, nine hundred eighty-five.
Scientific notation
- Scientific notation: 1.38605985 × 108
Factors of 138605985
Divisors of 138605985
- Number of divisors d(n): 96
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Complete list of divisors:
1 3 5 7 9 15 21 27 35 43 45 63 81 105 129 135 189 215 243 301 315 379 387 405 567 645 903 945 1137 1161 1215 1505 1701 1895 1935 2653 2709 2835 3411 3483 4515 5685 5805 7959 8127 8505 10233 10449 13265 13545 16297 17055 17415 23877 24381 30699 39795 40635 48891 51165 52245 71631 73143 81485 92097 114079 119385 121905 146673 153495 214893 244455 342237 358155 365715 440019 460485 570395 644679 733365 1026711 1074465 1320057 1711185 2200095 3080133 3223395 3960171 5133555 6600285 9240399 15400665 19800855 27721197 46201995 138605985
- Sum of all divisors σ(n): 292131840
- Sum of proper divisors (its aliquot sum) s(n): 153525855
- 138605985 is an abundant number, because the sum of its proper divisors (153525855) is greater than itself. Its abundance is 14919870
Bases of 138605985
- Binary: 10000100001011110101101000012
- Hexadecimal: 0x842F5A1
- Base-36: 2AIT29
Squares and roots of 138605985
- 138605985 squared (1386059852) is 19211619077820225
- 138605985 cubed (1386059853) is 2662845385726063939046625
-
The
square root of 138605985 is 11773.1043060019 -
The
cube root of 138605985 is 517.5202260525
Scales and comparisons
How big is 138605985?- 138,605,985 seconds is equal to 4 years, 21 weeks, 1 day, 5 hours, 39 minutes, 45 seconds.
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To count from 1 to 138,605,985 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 138605985 cubic inches would be around 43.1 feet tall.
Recreational maths with 138605985
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The information we have on file for 138605985 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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