138621

138,621 is an odd composite number composed of four prime numbers multiplied together.

What does the number 138621 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

138621 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 138621:

3 × 7² × 23 × 41

(3 × 7 × 7 × 23 × 41)

See below for interesting mathematical facts about the number 138621 from the Numbermatics database.

Names of 138621

Cardinal: 138621 can be written as One hundred thirty-eight thousand, six hundred twenty-one.

Scientific notation

Scientific notation: 1.38621 × 10⁵

Factors of 138621

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 74

Divisors of 138621

Number of divisors d(n): 24
Complete list of divisors:
1 3 7 21 23 41 49 69 123 147 161 287 483 861 943 1127 2009 2829 3381 6027 6601 19803 46207 138621
Sum of all divisors σ(n): 229824
Sum of proper divisors (its aliquot sum) s(n): 91203
138621 is a deficient number, because the sum of its proper divisors (91203) is less than itself. Its deficiency is 47418

Bases of 138621

Binary: 100001110101111101₂
Hexadecimal: 0x21D7D
Base-36: 2YYL

Squares and roots of 138621

138621 squared (138621²) is 19215781641
138621 cubed (138621³) is 2663710866857061
The square root of 138621 is 372.3184121153
The cube root of 138621 is 51.7538912801

Scales and comparisons

How big is 138621?

138,621 seconds is equal to 1 day, 14 hours, 30 minutes, 21 seconds.
To count from 1 to 138,621 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 138621 cubic inches would be around 4.3 feet tall.

Recreational maths with 138621

138621 backwards is 126831
138621 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 138621's digits is 21
More coming soon!

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The information we have on file for 138621 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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