81490400

81,490,400 is an even composite number composed of three prime numbers multiplied together.

What does the number 81490400 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 36 divisors.

81490400 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 81490400:

2⁵ × 5² × 101863

(2 × 2 × 2 × 2 × 2 × 5 × 5 × 101863)

See below for interesting mathematical facts about the number 81490400 from the Numbermatics database.

Names of 81490400

Cardinal: 81490400 can be written as Eighty-one million, four hundred ninety thousand, four hundred.

Scientific notation

Scientific notation: 8.14904 × 10⁷

Factors of 81490400

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 101870

Divisors of 81490400

Number of divisors d(n): 36
Complete list of divisors:
1 2 4 5 8 10 16 20 25 32 40 50 80 100 160 200 400 800 101863 203726 407452 509315 814904 1018630 1629808 2037260 2546575 3259616 4074520 5093150 8149040 10186300 16298080 20372600 40745200 81490400
Sum of all divisors σ(n): 198940392
Sum of proper divisors (its aliquot sum) s(n): 117449992
81490400 is an abundant number, because the sum of its proper divisors (117449992) is greater than itself. Its abundance is 35959592

Bases of 81490400

Binary: 100110110110111000111100000₂
Hexadecimal: 0x4DB71E0
Base-36: 1CIME8

Squares and roots of 81490400

81490400 squared (81490400²) is 6640685292160000
81490400 cubed (81490400³) is 541152100732235264000000
The square root of 81490400 is 9027.2033321511
The cube root of 81490400 is 433.5462990007

Scales and comparisons

How big is 81490400?

81,490,400 seconds is equal to 2 years, 30 weeks, 5 days, 4 hours, 13 minutes, 20 seconds.
To count from 1 to 81,490,400 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 81490400 cubic inches would be around 36.1 feet tall.

Recreational maths with 81490400

81490400 backwards is 00409418
The number of decimal digits it has is: 8
The sum of 81490400's digits is 26
More coming soon!

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The information we have on file for 81490400 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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