18406990

18,406,990 is an even composite number composed of four prime numbers multiplied together.

What does the number 18406990 look like?

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

18406990 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 18406990:

2 × 5 × 7 × 262957

See below for interesting mathematical facts about the number 18406990 from the Numbermatics database.

Names of 18406990

Cardinal: 18406990 can be written as Eighteen million, four hundred six thousand, nine hundred ninety.

Scientific notation

Scientific notation: 1.840699 × 10⁷

Factors of 18406990

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 262971

Divisors of 18406990

Number of divisors d(n): 16
Complete list of divisors:
1 2 5 7 10 14 35 70 262957 525914 1314785 1840699 2629570 3681398 9203495 18406990
Sum of all divisors σ(n): 37865952
Sum of proper divisors (its aliquot sum) s(n): 19458962
18406990 is an abundant number, because the sum of its proper divisors (19458962) is greater than itself. Its abundance is 1051972

Bases of 18406990

Binary: 1000110001101111001001110₂
Hexadecimal: 0x118DE4E
Base-36: AYIXA

Squares and roots of 18406990

18406990 squared (18406990²) is 338817280860100
18406990 cubed (18406990³) is 6236606300619052099000
The square root of 18406990 is 4290.3368166147
The cube root of 18406990 is 264.0346507165

Scales and comparisons

How big is 18406990?

18,406,990 seconds is equal to 30 weeks, 3 days, 1 hour, 3 minutes, 10 seconds.
To count from 1 to 18,406,990 would take you about forty-five 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 18406990 cubic inches would be around 22 feet tall.

Recreational maths with 18406990

18406990 backwards is 09960481
The number of decimal digits it has is: 8
The sum of 18406990's digits is 37
More coming soon!

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The information we have on file for 18406990 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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