72640

72,640 is an even composite number composed of three prime numbers multiplied together.

What does the number 72640 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 28 divisors.

72640 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-eight divisors.

Prime factorization of 72640:

2⁶ × 5 × 227

(2 × 2 × 2 × 2 × 2 × 2 × 5 × 227)

See below for interesting mathematical facts about the number 72640 from the Numbermatics database.

Names of 72640

Cardinal: 72640 can be written as Seventy-two thousand, six hundred forty.

Scientific notation

Scientific notation: 7.264 × 10⁴

Factors of 72640

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 234

Divisors of 72640

Number of divisors d(n): 28
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 64 80 160 227 320 454 908 1135 1816 2270 3632 4540 7264 9080 14528 18160 36320 72640
Sum of all divisors σ(n): 173736
Sum of proper divisors (its aliquot sum) s(n): 101096
72640 is an abundant number, because the sum of its proper divisors (101096) is greater than itself. Its abundance is 28456

Bases of 72640

Binary: 10001101111000000₂
Hexadecimal: 0x11BC0
Base-36: 1K1S

Squares and roots of 72640

72640 squared (72640²) is 5276569600
72640 cubed (72640³) is 383290015744000
The square root of 72640 is 269.5180884467
The cube root of 72640 is 41.7245772531

Scales and comparisons

How big is 72640?

72,640 seconds is equal to 20 hours, 10 minutes, 40 seconds.
To count from 1 to 72,640 would take you about twenty 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 72640 cubic inches would be around 3.5 feet tall.

Recreational maths with 72640

72640 backwards is 04627
The number of decimal digits it has is: 5
The sum of 72640's digits is 19
More coming soon!

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The information we have on file for 72640 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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