138705

138,705 is an odd composite number composed of four prime numbers multiplied together.

What does the number 138705 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

138705 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 138705:

3 × 5 × 7 × 1321

See below for interesting mathematical facts about the number 138705 from the Numbermatics database.

Names of 138705

Cardinal: 138705 can be written as One hundred thirty-eight thousand, seven hundred five.

Scientific notation

Scientific notation: 1.38705 × 10⁵

Factors of 138705

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 1336

Divisors of 138705

Number of divisors d(n): 16
Complete list of divisors:
1 3 5 7 15 21 35 105 1321 3963 6605 9247 19815 27741 46235 138705
Sum of all divisors σ(n): 253824
Sum of proper divisors (its aliquot sum) s(n): 115119
138705 is a deficient number, because the sum of its proper divisors (115119) is less than itself. Its deficiency is 23586

Bases of 138705

Binary: 100001110111010001₂
Hexadecimal: 0x21DD1
Base-36: 2Z0X

Squares and roots of 138705

138705 squared (138705²) is 19239077025
138705 cubed (138705³) is 2668556178752625
The square root of 138705 is 372.4312017003
The cube root of 138705 is 51.7643429169

Scales and comparisons

How big is 138705?

138,705 seconds is equal to 1 day, 14 hours, 31 minutes, 45 seconds.
To count from 1 to 138,705 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 138705 cubic inches would be around 4.3 feet tall.

Recreational maths with 138705

138705 backwards is 507831
The number of decimal digits it has is: 6
The sum of 138705's digits is 24
More coming soon!

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The information we have on file for 138705 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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