18990985

18,990,985 is an odd composite number composed of four prime numbers multiplied together.

What does the number 18990985 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

18990985 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 18990985:

5 × 13 × 23 × 12703

See below for interesting mathematical facts about the number 18990985 from the Numbermatics database.

Names of 18990985

Cardinal: 18990985 can be written as Eighteen million, nine hundred ninety thousand, nine hundred eighty-five.

Scientific notation

Scientific notation: 1.8990985 × 10⁷

Factors of 18990985

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 12744

Divisors of 18990985

Number of divisors d(n): 16
Complete list of divisors:
1 5 13 23 65 115 299 1495 12703 63515 165139 292169 825695 1460845 3798197 18990985
Sum of all divisors σ(n): 25611264
Sum of proper divisors (its aliquot sum) s(n): 6620279
18990985 is a deficient number, because the sum of its proper divisors (6620279) is less than itself. Its deficiency is 12370706

Bases of 18990985

Binary: 1001000011100011110001001₂
Hexadecimal: 0x121C789
Base-36: BB1JD

Squares and roots of 18990985

18990985 squared (18990985²) is 360657511270225
18990985 cubed (18990985³) is 6849241386670173921625
The square root of 18990985 is 4357.8647294289
The cube root of 18990985 is 266.7979553171

Scales and comparisons

How big is 18990985?

18,990,985 seconds is equal to 31 weeks, 2 days, 19 hours, 16 minutes, 25 seconds.
To count from 1 to 18,990,985 would take you about forty-seven weeks!

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 18990985 cubic inches would be around 22.2 feet tall.

Recreational maths with 18990985

18990985 backwards is 58909981
The number of decimal digits it has is: 8
The sum of 18990985's digits is 49
More coming soon!

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The information we have on file for 18990985 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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