21396155

21,396,155 is an odd composite number composed of five prime numbers multiplied together.

What does the number 21396155 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 32 divisors.

21396155 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21396155:

5 × 11 × 43 × 83 × 109

See below for interesting mathematical facts about the number 21396155 from the Numbermatics database.

Names of 21396155

Cardinal: 21396155 can be written as Twenty-one million, three hundred ninety-six thousand, one hundred fifty-five.

Scientific notation

Scientific notation: 2.1396155 × 10⁷

Factors of 21396155

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 5
Sum of prime factors: 251

Divisors of 21396155

Number of divisors d(n): 32
Complete list of divisors:
1 5 11 43 55 83 109 215 415 473 545 913 1199 2365 3569 4565 4687 5995 9047 17845 23435 39259 45235 51557 99517 196295 257785 389021 497585 1945105 4279231 21396155
Sum of all divisors σ(n): 29272320
Sum of proper divisors (its aliquot sum) s(n): 7876165
21396155 is a deficient number, because the sum of its proper divisors (7876165) is less than itself. Its deficiency is 13519990

Bases of 21396155

Binary: 1010001100111101010111011₂
Hexadecimal: 0x1467ABB
Base-36: CQLDN

Squares and roots of 21396155

21396155 squared (21396155²) is 457795448784025
21396155 cubed (21396155³) is 9795062380477560423875
The square root of 21396155 is 4625.5977992039
The cube root of 21396155 is 277.6164811435

Scales and comparisons

How big is 21396155?

21,396,155 seconds is equal to 35 weeks, 2 days, 15 hours, 22 minutes, 35 seconds.
To count from 1 to 21,396,155 would take you about eleven 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 21396155 cubic inches would be around 23.1 feet tall.

Recreational maths with 21396155

21396155 backwards is 55169312
The number of decimal digits it has is: 8
The sum of 21396155's digits is 32
More coming soon!

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The information we have on file for 21396155 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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