138686

138,686 is an even composite number composed of three prime numbers multiplied together.

What does the number 138686 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

138686 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 138686:

2 × 17 × 4079

See below for interesting mathematical facts about the number 138686 from the Numbermatics database.

Names of 138686

Cardinal: 138686 can be written as One hundred thirty-eight thousand, six hundred eighty-six.

Scientific notation

Scientific notation: 1.38686 × 10⁵

Factors of 138686

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 4098

Divisors of 138686

Number of divisors d(n): 8
Complete list of divisors:
1 2 17 34 4079 8158 69343 138686
Sum of all divisors σ(n): 220320
Sum of proper divisors (its aliquot sum) s(n): 81634
138686 is a deficient number, because the sum of its proper divisors (81634) is less than itself. Its deficiency is 57052

Bases of 138686

Binary: 100001110110111110₂
Hexadecimal: 0x21DBE
Base-36: 2Z0E

Squares and roots of 138686

138686 squared (138686²) is 19233806596
138686 cubed (138686³) is 2667459701572856
The square root of 138686 is 372.4056927599
The cube root of 138686 is 51.7619792257

Scales and comparisons

How big is 138686?

138,686 seconds is equal to 1 day, 14 hours, 31 minutes, 26 seconds.
To count from 1 to 138,686 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 138686 cubic inches would be around 4.3 feet tall.

Recreational maths with 138686

138686 backwards is 686831
The number of decimal digits it has is: 6
The sum of 138686's digits is 32
More coming soon!

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The information we have on file for 138686 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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