81172

81,172 is an even composite number composed of four prime numbers multiplied together.

What does the number 81172 look like?

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

81172 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 81172:

2² × 7 × 13 × 223

(2 × 2 × 7 × 13 × 223)

See below for interesting mathematical facts about the number 81172 from the Numbermatics database.

Names of 81172

Cardinal: 81172 can be written as Eighty-one thousand, one hundred seventy-two.

Scientific notation

Scientific notation: 8.1172 × 10⁴

Factors of 81172

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 245

Divisors of 81172

Number of divisors d(n): 24
Complete list of divisors:
1 2 4 7 13 14 26 28 52 91 182 223 364 446 892 1561 2899 3122 5798 6244 11596 20293 40586 81172
Sum of all divisors σ(n): 175616
Sum of proper divisors (its aliquot sum) s(n): 94444
81172 is an abundant number, because the sum of its proper divisors (94444) is greater than itself. Its abundance is 13272

Bases of 81172

Binary: 10011110100010100₂
Hexadecimal: 0x13D14
Base-36: 1QMS

Squares and roots of 81172

81172 squared (81172²) is 6588893584
81172 cubed (81172³) is 534833670000448
The square root of 81172 is 284.9070023709
The cube root of 81172 is 43.2980910039

Scales and comparisons

How big is 81172?

81,172 seconds is equal to 22 hours, 32 minutes, 52 seconds.
To count from 1 to 81,172 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 81172 cubic inches would be around 3.6 feet tall.

Recreational maths with 81172

81172 backwards is 27118
The number of decimal digits it has is: 5
The sum of 81172's digits is 19
More coming soon!

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The information we have on file for 81172 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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