21738740

21,738,740 is an even composite number composed of three prime numbers multiplied together.

What does the number 21738740 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

21738740 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21738740:

2² × 5 × 1086937

(2 × 2 × 5 × 1086937)

See below for interesting mathematical facts about the number 21738740 from the Numbermatics database.

Names of 21738740

Cardinal: 21738740 can be written as Twenty-one million, seven hundred thirty-eight thousand, seven hundred forty.

Scientific notation

Scientific notation: 2.173874 × 10⁷

Factors of 21738740

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 1086944

Divisors of 21738740

Number of divisors d(n): 12
Complete list of divisors:
1 2 4 5 10 20 1086937 2173874 4347748 5434685 10869370 21738740
Sum of all divisors σ(n): 45651396
Sum of proper divisors (its aliquot sum) s(n): 23912656
21738740 is an abundant number, because the sum of its proper divisors (23912656) is greater than itself. Its abundance is 2173916

Bases of 21738740

Binary: 1010010111011010011110100₂
Hexadecimal: 0x14BB4F4
Base-36: CXXPW

Squares and roots of 21738740

21738740 squared (21738740²) is 472572816787600
21738740 cubed (21738740³) is 10273137595213271624000
The square root of 21738740 is 4662.4821715477
The cube root of 21738740 is 279.0903301591

Scales and comparisons

How big is 21738740?

21,738,740 seconds is equal to 35 weeks, 6 days, 14 hours, 32 minutes, 20 seconds.
To count from 1 to 21,738,740 would take you about six days!

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 21738740 cubic inches would be around 23.3 feet tall.

Recreational maths with 21738740

21738740 backwards is 04783712
The number of decimal digits it has is: 8
The sum of 21738740's digits is 32
More coming soon!

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The information we have on file for 21738740 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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