21012409

21,012,409 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21012409 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 16 divisors.

21012409 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21012409:

11 × 23³ × 157

(11 × 23 × 23 × 23 × 157)

See below for interesting mathematical facts about the number 21012409 from the Numbermatics database.

Names of 21012409

Cardinal: 21012409 can be written as Twenty-one million, twelve thousand, four hundred nine.

Scientific notation

Scientific notation: 2.1012409 × 10⁷

Factors of 21012409

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 5
Sum of prime factors: 191

Divisors of 21012409

Number of divisors d(n): 16
Complete list of divisors:
1 11 23 157 253 529 1727 3611 5819 12167 39721 83053 133837 913583 1910219 21012409
Sum of all divisors σ(n): 24117120
Sum of proper divisors (its aliquot sum) s(n): 3104711
21012409 is a deficient number, because the sum of its proper divisors (3104711) is less than itself. Its deficiency is 17907698

Bases of 21012409

Binary: 1010000001001111110111001₂
Hexadecimal: 0x1409FB9
Base-36: CIDA1

Squares and roots of 21012409

21012409 squared (21012409²) is 441521331983281
21012409 cubed (21012409³) is 9277426809857481533929
The square root of 21012409 is 4583.9294279035
The cube root of 21012409 is 275.9467489857

Scales and comparisons

How big is 21012409?

21,012,409 seconds is equal to 34 weeks, 5 days, 4 hours, 46 minutes, 49 seconds.
To count from 1 to 21,012,409 would take you about nineteen 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 21012409 cubic inches would be around 23 feet tall.

Recreational maths with 21012409

21012409 backwards is 90421012
The number of decimal digits it has is: 8
The sum of 21012409's digits is 19
More coming soon!

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The information we have on file for 21012409 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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