638408

638,408 is an even composite number composed of two prime numbers multiplied together.

What does the number 638408 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

638408 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 638408:

2³ × 79801

(2 × 2 × 2 × 79801)

See below for interesting mathematical facts about the number 638408 from the Numbermatics database.

Names of 638408

Cardinal: 638408 can be written as Six hundred thirty-eight thousand, four hundred eight.

Scientific notation

Scientific notation: 6.38408 × 10⁵

Factors of 638408

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 4
Sum of prime factors: 79803

Divisors of 638408

Number of divisors d(n): 8
Complete list of divisors:
1 2 4 8 79801 159602 319204 638408
Sum of all divisors σ(n): 1197030
Sum of proper divisors (its aliquot sum) s(n): 558622
638408 is a deficient number, because the sum of its proper divisors (558622) is less than itself. Its deficiency is 79786

Bases of 638408

Binary: 10011011110111001000₂
Hexadecimal: 0x9BDC8
Base-36: DOLK

Squares and roots of 638408

638408 squared (638408²) is 407564774464
638408 cubed (638408³) is 260192612536013312
The square root of 638408 is 799.0043804635
The cube root of 638408 is 86.1058728535

Scales and comparisons

How big is 638408?

638,408 seconds is equal to 1 week, 9 hours, 20 minutes, 8 seconds.
To count from 1 to 638,408 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 638408 cubic inches would be around 7.2 feet tall.

Recreational maths with 638408

638408 backwards is 804836
The number of decimal digits it has is: 6
The sum of 638408's digits is 29
More coming soon!

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The information we have on file for 638408 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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