138981

138,981 is an odd composite number composed of two prime numbers multiplied together.

What does the number 138981 look like?

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

138981 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 138981:

3 × 46327

See below for interesting mathematical facts about the number 138981 from the Numbermatics database.

Names of 138981

Cardinal: 138981 can be written as One hundred thirty-eight thousand, nine hundred eighty-one.

Scientific notation

Scientific notation: 1.38981 × 10⁵

Factors of 138981

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 46330

Divisors of 138981

Number of divisors d(n): 4
Complete list of divisors:
1 3 46327 138981
Sum of all divisors σ(n): 185312
Sum of proper divisors (its aliquot sum) s(n): 46331
138981 is a deficient number, because the sum of its proper divisors (46331) is less than itself. Its deficiency is 92650

Bases of 138981

Binary: 100001111011100101₂
Hexadecimal: 0x21EE5
Base-36: 2Z8L

Squares and roots of 138981

138981 squared (138981²) is 19315718361
138981 cubed (138981³) is 2684517853530141
The square root of 138981 is 372.8015557907
The cube root of 138981 is 51.7986543281

Scales and comparisons

How big is 138981?

138,981 seconds is equal to 1 day, 14 hours, 36 minutes, 21 seconds.
To count from 1 to 138,981 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 138981 cubic inches would be around 4.3 feet tall.

Recreational maths with 138981

138981 backwards is 189831
The number of decimal digits it has is: 6
The sum of 138981's digits is 30
More coming soon!

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The information we have on file for 138981 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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