20491389

20,491,389 is an odd composite number composed of four prime numbers multiplied together.

What does the number 20491389 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

20491389 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 20491389:

3² × 47 × 193 × 251

(3 × 3 × 47 × 193 × 251)

See below for interesting mathematical facts about the number 20491389 from the Numbermatics database.

Names of 20491389

Cardinal: 20491389 can be written as Twenty million, four hundred ninety-one thousand, three hundred eighty-nine.

Scientific notation

Scientific notation: 2.0491389 × 10⁷

Factors of 20491389

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 494

Divisors of 20491389

Number of divisors d(n): 24
Complete list of divisors:
1 3 9 47 141 193 251 423 579 753 1737 2259 9071 11797 27213 35391 48443 81639 106173 145329 435987 2276821 6830463 20491389
Sum of all divisors σ(n): 30506112
Sum of proper divisors (its aliquot sum) s(n): 10014723
20491389 is a deficient number, because the sum of its proper divisors (10014723) is less than itself. Its deficiency is 10476666

Bases of 20491389

Binary: 1001110001010110001111101₂
Hexadecimal: 0x138AC7D
Base-36: C7799

Squares and roots of 20491389

20491389 squared (20491389²) is 419897023149321
20491389 cubed (20491389³) is 8604273241294741696869
The square root of 20491389 is 4526.7415433179
The cube root of 20491389 is 273.6468579973

Scales and comparisons

How big is 20491389?

20,491,389 seconds is equal to 33 weeks, 6 days, 4 hours, 3 minutes, 9 seconds.
To count from 1 to 20,491,389 would take you about fifty 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 20491389 cubic inches would be around 22.8 feet tall.

Recreational maths with 20491389

20491389 backwards is 98319402
The number of decimal digits it has is: 8
The sum of 20491389's digits is 36
More coming soon!

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The information we have on file for 20491389 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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