638140

638,140 is an even composite number composed of three prime numbers multiplied together.

What does the number 638140 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

638140 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 638140:

2² × 5 × 31907

(2 × 2 × 5 × 31907)

See below for interesting mathematical facts about the number 638140 from the Numbermatics database.

Names of 638140

Cardinal: 638140 can be written as Six hundred thirty-eight thousand, one hundred forty.

Scientific notation

Scientific notation: 6.3814 × 10⁵

Factors of 638140

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 31914

Divisors of 638140

Number of divisors d(n): 12
Complete list of divisors:
1 2 4 5 10 20 31907 63814 127628 159535 319070 638140
Sum of all divisors σ(n): 1340136
Sum of proper divisors (its aliquot sum) s(n): 701996
638140 is an abundant number, because the sum of its proper divisors (701996) is greater than itself. Its abundance is 63856

Bases of 638140

Binary: 10011011110010111100₂
Hexadecimal: 0x9BCBC
Base-36: DOE4

Squares and roots of 638140

638140 squared (638140²) is 407222659600
638140 cubed (638140³) is 259865067997144000
The square root of 638140 is 798.8366541415
The cube root of 638140 is 86.0938222507

Scales and comparisons

How big is 638140?

638,140 seconds is equal to 1 week, 9 hours, 15 minutes, 40 seconds.
To count from 1 to 638,140 would take you about nine 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 638140 cubic inches would be around 7.2 feet tall.

Recreational maths with 638140

638140 backwards is 041836
The number of decimal digits it has is: 6
The sum of 638140's digits is 22
More coming soon!

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The information we have on file for 638140 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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