90720721

90,720,721 is an odd composite number composed of four prime numbers multiplied together.

What does the number 90720721 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

90720721 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 90720721:

7 × 13³ × 17 × 347

(7 × 13 × 13 × 13 × 17 × 347)

See below for interesting mathematical facts about the number 90720721 from the Numbermatics database.

Names of 90720721

Cardinal: 90720721 can be written as Ninety million, seven hundred twenty thousand, seven hundred twenty-one.

Scientific notation

Scientific notation: 9.0720721 × 10⁷

Factors of 90720721

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 384

Divisors of 90720721

Number of divisors d(n): 32
Complete list of divisors:
1 7 13 17 91 119 169 221 347 1183 1547 2197 2429 2873 4511 5899 15379 20111 31577 37349 41293 58643 76687 261443 410501 536809 762359 996931 5336513 6978517 12960103 90720721
Sum of all divisors σ(n): 119266560
Sum of proper divisors (its aliquot sum) s(n): 28545839
90720721 is a deficient number, because the sum of its proper divisors (28545839) is less than itself. Its deficiency is 62174882

Bases of 90720721

Binary: 101011010000100100111010001₂
Hexadecimal: 0x56849D1
Base-36: 1I0GK1

Squares and roots of 90720721

90720721 squared (90720721²) is 8230249218759841
90720721 cubed (90720721³) is 746654143135579501365361
The square root of 90720721 is 9524.7425686997
The cube root of 90720721 is 449.3335335909

Scales and comparisons

How big is 90720721?

90,720,721 seconds is equal to 2 years, 46 weeks, 12 minutes, 1 second.
To count from 1 to 90,720,721 would take you about four 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 90720721 cubic inches would be around 37.4 feet tall.

Recreational maths with 90720721

90720721 backwards is 12702709
The number of decimal digits it has is: 8
The sum of 90720721's digits is 28
More coming soon!

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The information we have on file for 90720721 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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