21438755

21,438,755 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21438755 look like?

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

21438755 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21438755:

5 × 13 × 61 × 5407

See below for interesting mathematical facts about the number 21438755 from the Numbermatics database.

Names of 21438755

Cardinal: 21438755 can be written as Twenty-one million, four hundred thirty-eight thousand, seven hundred fifty-five.

Scientific notation

Scientific notation: 2.1438755 × 10⁷

Factors of 21438755

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 5486

Divisors of 21438755

Number of divisors d(n): 16
Complete list of divisors:
1 5 13 61 65 305 793 3965 5407 27035 70291 329827 351455 1649135 4287751 21438755
Sum of all divisors σ(n): 28164864
Sum of proper divisors (its aliquot sum) s(n): 6726109
21438755 is a deficient number, because the sum of its proper divisors (6726109) is less than itself. Its deficiency is 14712646

Bases of 21438755

Binary: 1010001110010000100100011₂
Hexadecimal: 0x1472123
Base-36: CRI8Z

Squares and roots of 21438755

21438755 squared (21438755²) is 459620215950025
21438755 cubed (21438755³) is 9853685202799678218875
The square root of 21438755 is 4630.2003196409
The cube root of 21438755 is 277.8006049093

Scales and comparisons

How big is 21438755?

21,438,755 seconds is equal to 35 weeks, 3 days, 3 hours, 12 minutes, 35 seconds.
To count from 1 to 21,438,755 would take you about four hours!

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 21438755 cubic inches would be around 23.2 feet tall.

Recreational maths with 21438755

21438755 backwards is 55783412
The number of decimal digits it has is: 8
The sum of 21438755's digits is 35
More coming soon!

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The information we have on file for 21438755 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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