640402

640,402 is an even composite number composed of four prime numbers multiplied together.

What does the number 640402 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

640402 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 640402:

2 × 7 × 149 × 307

See below for interesting mathematical facts about the number 640402 from the Numbermatics database.

Names of 640402

Cardinal: 640402 can be written as Six hundred forty thousand, four hundred two.

Scientific notation

Scientific notation: 6.40402 × 10⁵

Factors of 640402

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 465

Divisors of 640402

Number of divisors d(n): 16
Complete list of divisors:
1 2 7 14 149 298 307 614 1043 2086 2149 4298 45743 91486 320201 640402
Sum of all divisors σ(n): 1108800
Sum of proper divisors (its aliquot sum) s(n): 468398
640402 is a deficient number, because the sum of its proper divisors (468398) is less than itself. Its deficiency is 172004

Bases of 640402

Binary: 10011100010110010010₂
Hexadecimal: 0x9C592
Base-36: DQ4Y

Squares and roots of 640402

640402 squared (640402²) is 410114721604
640402 cubed (640402³) is 262638287944644808
The square root of 640402 is 800.2512105583
The cube root of 640402 is 86.1954272153

Scales and comparisons

How big is 640402?

640,402 seconds is equal to 1 week, 9 hours, 53 minutes, 22 seconds.
To count from 1 to 640,402 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 640402 cubic inches would be around 7.2 feet tall.

Recreational maths with 640402

640402 backwards is 204046
The number of decimal digits it has is: 6
The sum of 640402's digits is 16
More coming soon!

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The information we have on file for 640402 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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