20391742

20,391,742 is an even composite number composed of four prime numbers multiplied together.

What does the number 20391742 look like?

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

20391742 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 20391742:

2 × 7² × 251 × 829

(2 × 7 × 7 × 251 × 829)

See below for interesting mathematical facts about the number 20391742 from the Numbermatics database.

Names of 20391742

Cardinal: 20391742 can be written as Twenty million, three hundred ninety-one thousand, seven hundred forty-two.

Scientific notation

Scientific notation: 2.0391742 × 10⁷

Factors of 20391742

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 1089

Divisors of 20391742

Number of divisors d(n): 24
Complete list of divisors:
1 2 7 14 49 98 251 502 829 1658 1757 3514 5803 11606 12299 24598 40621 81242 208079 416158 1456553 2913106 10195871 20391742
Sum of all divisors σ(n): 35766360
Sum of proper divisors (its aliquot sum) s(n): 15374618
20391742 is a deficient number, because the sum of its proper divisors (15374618) is less than itself. Its deficiency is 5017124

Bases of 20391742

Binary: 1001101110010011100111110₂
Hexadecimal: 0x137273E
Base-36: C52DA

Squares and roots of 20391742

20391742 squared (20391742²) is 415823141794564
20391742 cubed (20391742³) is 8479358225104166090488
The square root of 20391742 is 4515.7216477547
The cube root of 20391742 is 273.2025671677

Scales and comparisons

How big is 20391742?

20,391,742 seconds is equal to 33 weeks, 5 days, 22 minutes, 22 seconds.
To count from 1 to 20,391,742 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 20391742 cubic inches would be around 22.8 feet tall.

Recreational maths with 20391742

20391742 backwards is 24719302
The number of decimal digits it has is: 8
The sum of 20391742's digits is 28
More coming soon!

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The information we have on file for 20391742 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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