64728990

64,728,990 is an even composite number composed of four prime numbers multiplied together.

What does the number 64728990 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

64728990 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 64728990:

2 × 3³ × 5 × 239737

(2 × 3 × 3 × 3 × 5 × 239737)

See below for interesting mathematical facts about the number 64728990 from the Numbermatics database.

Names of 64728990

Cardinal: 64728990 can be written as Sixty-four million, seven hundred twenty-eight thousand, nine hundred ninety.

Scientific notation

Scientific notation: 6.472899 × 10⁷

Factors of 64728990

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 239747

Divisors of 64728990

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 239737 479474 719211 1198685 1438422 2157633 2397370 3596055 4315266 6472899 7192110 10788165 12945798 21576330 32364495 64728990
Sum of all divisors σ(n): 172611360
Sum of proper divisors (its aliquot sum) s(n): 107882370
64728990 is an abundant number, because the sum of its proper divisors (107882370) is greater than itself. Its abundance is 43153380

Bases of 64728990

Binary: 11110110111010111110011110₂
Hexadecimal: 0x3DBAF9E
Base-36: 12JD7I

Squares and roots of 64728990

64728990 squared (64728990²) is 4189842146420100
64728990 cubed (64728990³) is 271204250397205188699000
The square root of 64728990 is 8045.4328659185
The cube root of 64728990 is 401.5129990359

Scales and comparisons

How big is 64728990?

64,728,990 seconds is equal to 2 years, 3 weeks, 4 hours, 16 minutes, 30 seconds.
To count from 1 to 64,728,990 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 64728990 cubic inches would be around 33.5 feet tall.

Recreational maths with 64728990

64728990 backwards is 09982746
64728990 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 64728990's digits is 45
More coming soon!

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The information we have on file for 64728990 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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