21399213

21,399,213 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21399213 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

21399213 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21399213:

3 × 11² × 167 × 353

(3 × 11 × 11 × 167 × 353)

See below for interesting mathematical facts about the number 21399213 from the Numbermatics database.

Names of 21399213

Cardinal: 21399213 can be written as Twenty-one million, three hundred ninety-nine thousand, two hundred thirteen.

Scientific notation

Scientific notation: 2.1399213 × 10⁷

Factors of 21399213

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 534

Divisors of 21399213

Number of divisors d(n): 24
Complete list of divisors:
1 3 11 33 121 167 353 363 501 1059 1837 3883 5511 11649 20207 42713 58951 60621 128139 176853 648461 1945383 7133071 21399213
Sum of all divisors σ(n): 31639104
Sum of proper divisors (its aliquot sum) s(n): 10239891
21399213 is a deficient number, because the sum of its proper divisors (10239891) is less than itself. Its deficiency is 11159322

Bases of 21399213

Binary: 1010001101000011010101101₂
Hexadecimal: 0x14686AD
Base-36: CQNQL

Squares and roots of 21399213

21399213 squared (21399213²) is 457926317019369
21399213 cubed (21399213³) is 9799262796203002356597
The square root of 21399213 is 4625.9283392633
The cube root of 21399213 is 277.6297064287

Scales and comparisons

How big is 21399213?

21,399,213 seconds is equal to 35 weeks, 2 days, 16 hours, 13 minutes, 33 seconds.
To count from 1 to 21,399,213 would take you about twelve 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 21399213 cubic inches would be around 23.1 feet tall.

Recreational maths with 21399213

21399213 backwards is 31299312
The number of decimal digits it has is: 8
The sum of 21399213's digits is 30
More coming soon!

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The information we have on file for 21399213 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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