21399885

21,399,885 is an odd composite number composed of five prime numbers multiplied together.

What does the number 21399885 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21399885 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21399885:

3² × 5 × 13 × 157 × 233

(3 × 3 × 5 × 13 × 157 × 233)

See below for interesting mathematical facts about the number 21399885 from the Numbermatics database.

Names of 21399885

Cardinal: 21399885 can be written as Twenty-one million, three hundred ninety-nine thousand, eight hundred eighty-five.

Scientific notation

Scientific notation: 2.1399885 × 10⁷

Factors of 21399885

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 411

Divisors of 21399885

Number of divisors d(n): 48
Complete list of divisors:
1 3 5 9 13 15 39 45 65 117 157 195 233 471 585 699 785 1165 1413 2041 2097 2355 3029 3495 6123 7065 9087 10205 10485 15145 18369 27261 30615 36581 45435 91845 109743 136305 182905 329229 475553 548715 1426659 1646145 2377765 4279977 7133295 21399885
Sum of all divisors σ(n): 40373424
Sum of proper divisors (its aliquot sum) s(n): 18973539
21399885 is a deficient number, because the sum of its proper divisors (18973539) is less than itself. Its deficiency is 2426346

Bases of 21399885

Binary: 1010001101000100101001101₂
Hexadecimal: 0x146894D
Base-36: CQO99

Squares and roots of 21399885

21399885 squared (21399885²) is 457955078013225
21399885 cubed (21399885³) is 9800186004649043479125
The square root of 21399885 is 4626.0009727627
The cube root of 21399885 is 277.6326125359

Scales and comparisons

How big is 21399885?

21,399,885 seconds is equal to 35 weeks, 2 days, 16 hours, 24 minutes, 45 seconds.
To count from 1 to 21,399,885 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 21399885 cubic inches would be around 23.1 feet tall.

Recreational maths with 21399885

21399885 backwards is 58899312
21399885 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21399885's digits is 45
More coming soon!

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The information we have on file for 21399885 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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