138391280

138,391,280 is an even composite number composed of three prime numbers multiplied together.

What does the number 138391280 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

138391280 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 138391280:

2⁴ × 5 × 1729891

(2 × 2 × 2 × 2 × 5 × 1729891)

See below for interesting mathematical facts about the number 138391280 from the Numbermatics database.

Names of 138391280

Cardinal: 138391280 can be written as One hundred thirty-eight million, three hundred ninety-one thousand, two hundred eighty.

Scientific notation

Scientific notation: 1.3839128 × 10⁸

Factors of 138391280

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 1729898

Divisors of 138391280

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 5 8 10 16 20 40 80 1729891 3459782 6919564 8649455 13839128 17298910 27678256 34597820 69195640 138391280
Sum of all divisors σ(n): 321759912
Sum of proper divisors (its aliquot sum) s(n): 183368632
138391280 is an abundant number, because the sum of its proper divisors (183368632) is greater than itself. Its abundance is 44977352

Bases of 138391280

Binary: 1000001111111010111011110000₂
Hexadecimal: 0x83FAEF0
Base-36: 2AE7E8

Squares and roots of 138391280

138391280 squared (138391280²) is 19152146380038400
138391280 cubed (138391280³) is 2650490052280880625152000
The square root of 138391280 is 11763.9823189259
The cube root of 138391280 is 517.2528696257

Scales and comparisons

How big is 138391280?

138,391,280 seconds is equal to 4 years, 20 weeks, 5 days, 18 hours, 1 minute, 20 seconds.
To count from 1 to 138,391,280 would take you about six years!

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 138391280 cubic inches would be around 43.1 feet tall.

Recreational maths with 138391280

138391280 backwards is 082193831
The number of decimal digits it has is: 9
The sum of 138391280's digits is 35
More coming soon!

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The information we have on file for 138391280 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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