21225215

21,225,215 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21225215 look like?

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

21225215 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 21225215:

5 × 11² × 35083

(5 × 11 × 11 × 35083)

See below for interesting mathematical facts about the number 21225215 from the Numbermatics database.

Names of 21225215

Cardinal: 21225215 can be written as Twenty-one million, two hundred twenty-five thousand, two hundred fifteen.

Scientific notation

Scientific notation: 2.1225215 × 10⁷

Factors of 21225215

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 35099

Divisors of 21225215

Number of divisors d(n): 12
Complete list of divisors:
1 5 11 55 121 605 35083 175415 385913 1929565 4245043 21225215
Sum of all divisors σ(n): 27997032
Sum of proper divisors (its aliquot sum) s(n): 6771817
21225215 is a deficient number, because the sum of its proper divisors (6771817) is less than itself. Its deficiency is 14453398

Bases of 21225215

Binary: 1010000111101111011111111₂
Hexadecimal: 0x143DEFF
Base-36: CMXHB

Squares and roots of 21225215

21225215 squared (21225215²) is 450509751796225
21225215 cubed (21225215³) is 9562166341471511813375
The square root of 21225215 is 4607.0831336107
The cube root of 21225215 is 276.8751843321

Scales and comparisons

How big is 21225215?

21,225,215 seconds is equal to 35 weeks, 15 hours, 53 minutes, 35 seconds.
To count from 1 to 21,225,215 would take you about four 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 21225215 cubic inches would be around 23.1 feet tall.

Recreational maths with 21225215

21225215 backwards is 51252212
The number of decimal digits it has is: 8
The sum of 21225215's digits is 20
More coming soon!

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The information we have on file for 21225215 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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