638385

638,385 is an odd composite number composed of five prime numbers multiplied together.

What does the number 638385 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

638385 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 638385:

3 × 5 × 11 × 53 × 73

See below for interesting mathematical facts about the number 638385 from the Numbermatics database.

Names of 638385

Cardinal: 638385 can be written as Six hundred thirty-eight thousand, three hundred eighty-five.

Scientific notation

Scientific notation: 6.38385 × 10⁵

Factors of 638385

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 145

Divisors of 638385

Number of divisors d(n): 32
Complete list of divisors:
1 3 5 11 15 33 53 55 73 159 165 219 265 365 583 795 803 1095 1749 2409 2915 3869 4015 8745 11607 12045 19345 42559 58035 127677 212795 638385
Sum of all divisors σ(n): 1150848
Sum of proper divisors (its aliquot sum) s(n): 512463
638385 is a deficient number, because the sum of its proper divisors (512463) is less than itself. Its deficiency is 125922

Bases of 638385

Binary: 10011011110110110001₂
Hexadecimal: 0x9BDB1
Base-36: DOKX

Squares and roots of 638385

638385 squared (638385²) is 407535408225
638385 cubed (638385³) is 260164491579716625
The square root of 638385 is 798.9899874217
The cube root of 638385 is 86.1048387923

Scales and comparisons

How big is 638385?

638,385 seconds is equal to 1 week, 9 hours, 19 minutes, 45 seconds.
To count from 1 to 638,385 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 638385 cubic inches would be around 7.2 feet tall.

Recreational maths with 638385

638385 backwards is 583836
638385 is a Harshad number.
The number of decimal digits it has is: 6
The sum of 638385's digits is 33
More coming soon!

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The information we have on file for 638385 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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