21006447

21,006,447 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21006447 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 36 divisors.

21006447 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 21006447:

3 × 7² × 11² × 1181

(3 × 7 × 7 × 11 × 11 × 1181)

See below for interesting mathematical facts about the number 21006447 from the Numbermatics database.

Names of 21006447

Cardinal: 21006447 can be written as Twenty-one million, six thousand, four hundred forty-seven.

Scientific notation

Scientific notation: 2.1006447 × 10⁷

Factors of 21006447

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 1202

Divisors of 21006447

Number of divisors d(n): 36
Complete list of divisors:
1 3 7 11 21 33 49 77 121 147 231 363 539 847 1181 1617 2541 3543 5929 8267 12991 17787 24801 38973 57869 90937 142901 173607 272811 428703 636559 1000307 1909677 3000921 7002149 21006447
Sum of all divisors σ(n): 35842968
Sum of proper divisors (its aliquot sum) s(n): 14836521
21006447 is a deficient number, because the sum of its proper divisors (14836521) is less than itself. Its deficiency is 6169926

Bases of 21006447

Binary: 1010000001000100001101111₂
Hexadecimal: 0x140886F
Base-36: CI8OF

Squares and roots of 21006447

21006447 squared (21006447²) is 441270815563809
21006447 cubed (21006447³) is 9269531999787928876623
The square root of 21006447 is 4583.2790663455
The cube root of 21006447 is 275.9206477405

Scales and comparisons

How big is 21006447?

21,006,447 seconds is equal to 34 weeks, 5 days, 3 hours, 7 minutes, 27 seconds.
To count from 1 to 21,006,447 would take you about sixteen 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 21006447 cubic inches would be around 23 feet tall.

Recreational maths with 21006447

21006447 backwards is 74460012
The number of decimal digits it has is: 8
The sum of 21006447's digits is 24
More coming soon!

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The information we have on file for 21006447 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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