81486729

81,486,729 is an odd composite number composed of three prime numbers multiplied together.

What does the number 81486729 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 45 divisors.

81486729 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-five divisors.

Prime factorization of 81486729:

3⁴ × 17² × 59²

(3 × 3 × 3 × 3 × 17 × 17 × 59 × 59)

See below for interesting mathematical facts about the number 81486729 from the Numbermatics database.

Names of 81486729

Cardinal: 81486729 can be written as Eighty-one million, four hundred eighty-six thousand, seven hundred twenty-nine.

Scientific notation

Scientific notation: 8.1486729 × 10⁷

Factors of 81486729

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 79

Divisors of 81486729

Number of divisors d(n): 45
Complete list of divisors:
1 3 9 17 27 51 59 81 153 177 289 459 531 867 1003 1377 1593 2601 3009 3481 4779 7803 9027 10443 17051 23409 27081 31329 51153 59177 81243 93987 153459 177531 281961 460377 532593 1006009 1381131 1597779 3018027 4793337 9054081 27162243 81486729
Sum of all divisors σ(n): 131537527
Sum of proper divisors (its aliquot sum) s(n): 50050798
81486729 is a deficient number, because the sum of its proper divisors (50050798) is less than itself. Its deficiency is 31435931

Bases of 81486729

Binary: 100110110110110001110001001₂
Hexadecimal: 0x4DB6389
Base-36: 1CIJK9

Squares and roots of 81486729

81486729 squared (81486729²) is 6640087003119441
81486729 cubed (81486729³) is 541078970159616043398489
81486729 is a perfect square number. Its square root is 9027
The cube root of 81486729 is 433.5397887355

Scales and comparisons

How big is 81486729?

81,486,729 seconds is equal to 2 years, 30 weeks, 5 days, 3 hours, 12 minutes, 9 seconds.
To count from 1 to 81,486,729 would take you about three 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 81486729 cubic inches would be around 36.1 feet tall.

Recreational maths with 81486729

81486729 backwards is 92768418
The number of decimal digits it has is: 8
The sum of 81486729's digits is 45
More coming soon!

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The information we have on file for 81486729 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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