138665

138,665 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138665 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

138665 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 138665:

5 × 27733

See below for interesting mathematical facts about the number 138665 from the Numbermatics database.

Names of 138665

Cardinal: 138665 can be written as One hundred thirty-eight thousand, six hundred sixty-five.

Scientific notation

Scientific notation: 1.38665 × 10⁵

Factors of 138665

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 27738

Divisors of 138665

Number of divisors d(n): 4
Complete list of divisors:
1 5 27733 138665
Sum of all divisors σ(n): 166404
Sum of proper divisors (its aliquot sum) s(n): 27739
138665 is a deficient number, because the sum of its proper divisors (27739) is less than itself. Its deficiency is 110926

Bases of 138665

Binary: 100001110110101001₂
Hexadecimal: 0x21DA9
Base-36: 2YZT

Squares and roots of 138665

138665 squared (138665²) is 19227982225
138665 cubed (138665³) is 2666248155229625
The square root of 138665 is 372.3774966347
The cube root of 138665 is 51.7593664735

Scales and comparisons

How big is 138665?

138,665 seconds is equal to 1 day, 14 hours, 31 minutes, 5 seconds.
To count from 1 to 138,665 would take you about fourteen hours.

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 138665 cubic inches would be around 4.3 feet tall.

Recreational maths with 138665

138665 backwards is 566831
The number of decimal digits it has is: 6
The sum of 138665's digits is 29
More coming soon!

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The information we have on file for 138665 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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