21294640

21,294,640 is an even composite number composed of three prime numbers multiplied together.

What does the number 21294640 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 20 divisors.

21294640 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty divisors.

Prime factorization of 21294640:

2⁴ × 5 × 266183

(2 × 2 × 2 × 2 × 5 × 266183)

See below for interesting mathematical facts about the number 21294640 from the Numbermatics database.

Names of 21294640

Cardinal: 21294640 can be written as Twenty-one million, two hundred ninety-four thousand, six hundred forty.

Scientific notation

Scientific notation: 2.129464 × 10⁷

Factors of 21294640

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 6
Sum of prime factors: 266190

Divisors of 21294640

Number of divisors d(n): 20
Complete list of divisors:
1 2 4 5 8 10 16 20 40 80 266183 532366 1064732 1330915 2129464 2661830 4258928 5323660 10647320 21294640
Sum of all divisors σ(n): 49510224
Sum of proper divisors (its aliquot sum) s(n): 28215584
21294640 is an abundant number, because the sum of its proper divisors (28215584) is greater than itself. Its abundance is 6920944

Bases of 21294640

Binary: 1010001001110111000110000₂
Hexadecimal: 0x144EE30
Base-36: COF1S

Squares and roots of 21294640

21294640 squared (21294640²) is 453461692729600
21294640 cubed (21294640³) is 9656303500467449344000
The square root of 21294640 is 4614.6115762867
The cube root of 21294640 is 277.1767303947

Scales and comparisons

How big is 21294640?

21,294,640 seconds is equal to 35 weeks, 1 day, 11 hours, 10 minutes, 40 seconds.
To count from 1 to 21,294,640 would take you about five 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 21294640 cubic inches would be around 23.1 feet tall.

Recreational maths with 21294640

21294640 backwards is 04649212
The number of decimal digits it has is: 8
The sum of 21294640's digits is 28
More coming soon!

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The information we have on file for 21294640 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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