21345208

21,345,208 is an even composite number composed of three prime numbers multiplied together.

What does the number 21345208 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 32 divisors.

21345208 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21345208:

2³ × 19³ × 389

(2 × 2 × 2 × 19 × 19 × 19 × 389)

See below for interesting mathematical facts about the number 21345208 from the Numbermatics database.

Names of 21345208

Cardinal: 21345208 can be written as Twenty-one million, three hundred forty-five thousand, two hundred eight.

Scientific notation

Scientific notation: 2.1345208 × 10⁷

Factors of 21345208

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 410

Divisors of 21345208

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 8 19 38 76 152 361 389 722 778 1444 1556 2888 3112 6859 7391 13718 14782 27436 29564 54872 59128 140429 280858 561716 1123432 2668151 5336302 10672604 21345208
Sum of all divisors σ(n): 42354000
Sum of proper divisors (its aliquot sum) s(n): 21008792
21345208 is a deficient number, because the sum of its proper divisors (21008792) is less than itself. Its deficiency is 336416

Bases of 21345208

Binary: 1010001011011001110111000₂
Hexadecimal: 0x145B3B8
Base-36: CPI2G

Squares and roots of 21345208

21345208 squared (21345208²) is 455617904563264
21345208 cubed (21345208³) is 9725258941427019238912
The square root of 21345208 is 4620.0874450597
The cube root of 21345208 is 277.3959591581

Scales and comparisons

How big is 21345208?

21,345,208 seconds is equal to 35 weeks, 2 days, 1 hour, 13 minutes, 28 seconds.
To count from 1 to 21,345,208 would take you about six 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 21345208 cubic inches would be around 23.1 feet tall.

Recreational maths with 21345208

21345208 backwards is 80254312
The number of decimal digits it has is: 8
The sum of 21345208's digits is 25
More coming soon!

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The information we have on file for 21345208 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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