81940

81,940 is an even composite number composed of four prime numbers multiplied together.

What does the number 81940 look like?

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

81940 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 81940:

2² × 5 × 17 × 241

(2 × 2 × 5 × 17 × 241)

See below for interesting mathematical facts about the number 81940 from the Numbermatics database.

Names of 81940

Cardinal: 81940 can be written as Eighty-one thousand, nine hundred forty.

Scientific notation

Scientific notation: 8.194 × 10⁴

Factors of 81940

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 265

Divisors of 81940

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 5 10 17 20 34 68 85 170 241 340 482 964 1205 2410 4097 4820 8194 16388 20485 40970 81940
Sum of all divisors σ(n): 182952
Sum of proper divisors (its aliquot sum) s(n): 101012
81940 is an abundant number, because the sum of its proper divisors (101012) is greater than itself. Its abundance is 19072

Bases of 81940

Binary: 10100000000010100₂
Hexadecimal: 0x14014
Base-36: 1R84

Squares and roots of 81940

81940 squared (81940²) is 6714163600
81940 cubed (81940³) is 550158565384000
The square root of 81940 is 286.2516375499
The cube root of 81940 is 43.4342159759

Scales and comparisons

How big is 81940?

81,940 seconds is equal to 22 hours, 45 minutes, 40 seconds.
To count from 1 to 81,940 would take you about twenty-two 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 81940 cubic inches would be around 3.6 feet tall.

Recreational maths with 81940

81940 backwards is 04918
The number of decimal digits it has is: 5
The sum of 81940's digits is 22
More coming soon!

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The information we have on file for 81940 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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