21228711

21,228,711 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21228711 look like?

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

21228711 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 21228711:

3 × 7² × 144413

(3 × 7 × 7 × 144413)

See below for interesting mathematical facts about the number 21228711 from the Numbermatics database.

Names of 21228711

Cardinal: 21228711 can be written as Twenty-one million, two hundred twenty-eight thousand, seven hundred eleven.

Scientific notation

Scientific notation: 2.1228711 × 10⁷

Factors of 21228711

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 4
Sum of prime factors: 144423

Divisors of 21228711

Number of divisors d(n): 12
Complete list of divisors:
1 3 7 21 49 147 144413 433239 1010891 3032673 7076237 21228711
Sum of all divisors σ(n): 32926392
Sum of proper divisors (its aliquot sum) s(n): 11697681
21228711 is a deficient number, because the sum of its proper divisors (11697681) is less than itself. Its deficiency is 9531030

Bases of 21228711

Binary: 1010000111110110010100111₂
Hexadecimal: 0x143ECA7
Base-36: CN06F

Squares and roots of 21228711

21228711 squared (21228711²) is 450658170721521
21228711 cubed (21228711³) is 9566892066035830789431
The square root of 21228711 is 4607.4625337597
The cube root of 21228711 is 276.8903848455

Scales and comparisons

How big is 21228711?

21,228,711 seconds is equal to 35 weeks, 16 hours, 51 minutes, 51 seconds.
To count from 1 to 21,228,711 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 21228711 cubic inches would be around 23.1 feet tall.

Recreational maths with 21228711

21228711 backwards is 11782212
The number of decimal digits it has is: 8
The sum of 21228711's digits is 24
More coming soon!

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The information we have on file for 21228711 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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