640485729

640,485,729 is an odd composite number composed of four prime numbers multiplied together.

What does the number 640485729 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

640485729 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 640485729:

3² × 13 × 139 × 39383

(3 × 3 × 13 × 139 × 39383)

See below for interesting mathematical facts about the number 640485729 from the Numbermatics database.

Names of 640485729

Cardinal: 640485729 can be written as Six hundred forty million, four hundred eighty-five thousand, seven hundred twenty-nine.

Scientific notation

Scientific notation: 6.40485729 × 10⁸

Factors of 640485729

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 39538

Divisors of 640485729

Number of divisors d(n): 24
Complete list of divisors:
1 3 9 13 39 117 139 417 1251 1807 5421 16263 39383 118149 354447 511979 1535937 4607811 5474237 16422711 49268133 71165081 213495243 640485729
Sum of all divisors σ(n): 1003504320
Sum of proper divisors (its aliquot sum) s(n): 363018591
640485729 is a deficient number, because the sum of its proper divisors (363018591) is less than itself. Its deficiency is 277467138

Bases of 640485729

Binary: 100110001011010000100101100001₂
Hexadecimal: 0x262D0961
Base-36: ALBTY9

Squares and roots of 640485729

640485729 squared (640485729²) is 410221969052661441
640485729 cubed (640485729³) is 262741316900509302429075489
The square root of 640485729 is 25307.8195228273
The cube root of 640485729 is 861.9918357583

Scales and comparisons

How big is 640485729?

640,485,729 seconds is equal to 20 years, 19 weeks, 42 minutes, 9 seconds.
To count from 1 to 640,485,729 would take you about thirty 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 640485729 cubic inches would be around 71.8 feet tall.

Recreational maths with 640485729

640485729 backwards is 927584046
The number of decimal digits it has is: 9
The sum of 640485729's digits is 45
More coming soon!

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The information we have on file for 640485729 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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