81081

81,081 is an odd composite number composed of four prime numbers multiplied together.

What does the number 81081 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 40 divisors.

81081 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty divisors.

Prime factorization of 81081:

3⁴ × 7 × 11 × 13

(3 × 3 × 3 × 3 × 7 × 11 × 13)

See below for interesting mathematical facts about the number 81081 from the Numbermatics database.

Names of 81081

Cardinal: 81081 can be written as Eighty-one thousand and eighty-one.

Scientific notation

Scientific notation: 8.1081 × 10⁴

Factors of 81081

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 7
Sum of prime factors: 34

Divisors of 81081

Number of divisors d(n): 40
Complete list of divisors:
1 3 7 9 11 13 21 27 33 39 63 77 81 91 99 117 143 189 231 273 297 351 429 567 693 819 891 1001 1053 1287 2079 2457 3003 3861 6237 7371 9009 11583 27027 81081
Sum of all divisors σ(n): 162624
Sum of proper divisors (its aliquot sum) s(n): 81543
81081 is an abundant number, because the sum of its proper divisors (81543) is greater than itself. Its abundance is 462

Bases of 81081

Binary: 10011110010111001₂
Hexadecimal: 0x13CB9
Base-36: 1QK9

Squares and roots of 81081

81081 squared (81081²) is 6574128561
81081 cubed (81081³) is 533036917854441
The square root of 81081 is 284.7472563521
The cube root of 81081 is 43.2819048001

Scales and comparisons

How big is 81081?

81,081 seconds is equal to 22 hours, 31 minutes, 21 seconds.
To count from 1 to 81,081 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 81081 cubic inches would be around 3.6 feet tall.

Recreational maths with 81081

81081 backwards is 18018
The number of decimal digits it has is: 5
The sum of 81081's digits is 18
More coming soon!

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The information we have on file for 81081 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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