21319816

21,319,816 is an even composite number composed of four prime numbers multiplied together.

What does the number 21319816 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 32 divisors.

21319816 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of thirty-two divisors.

Prime factorization of 21319816:

2³ × 7 × 31 × 12281

(2 × 2 × 2 × 7 × 31 × 12281)

See below for interesting mathematical facts about the number 21319816 from the Numbermatics database.

Names of 21319816

Cardinal: 21319816 can be written as Twenty-one million, three hundred nineteen thousand, eight hundred sixteen.

Scientific notation

Scientific notation: 2.1319816 × 10⁷

Factors of 21319816

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 12321

Divisors of 21319816

Number of divisors d(n): 32
Complete list of divisors:
1 2 4 7 8 14 28 31 56 62 124 217 248 434 868 1736 12281 24562 49124 85967 98248 171934 343868 380711 687736 761422 1522844 2664977 3045688 5329954 10659908 21319816
Sum of all divisors σ(n): 47162880
Sum of proper divisors (its aliquot sum) s(n): 25843064
21319816 is an abundant number, because the sum of its proper divisors (25843064) is greater than itself. Its abundance is 4523248

Bases of 21319816

Binary: 1010001010101000010001000₂
Hexadecimal: 0x1455088
Base-36: COYH4

Squares and roots of 21319816

21319816 squared (21319816²) is 454534554273856
21319816 cubed (21319816³) is 9690593062760623530496
The square root of 21319816 is 4617.3386273913
The cube root of 21319816 is 277.2859198923

Scales and comparisons

How big is 21319816?

21,319,816 seconds is equal to 35 weeks, 1 day, 18 hours, 10 minutes, 16 seconds.
To count from 1 to 21,319,816 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 21319816 cubic inches would be around 23.1 feet tall.

Recreational maths with 21319816

21319816 backwards is 61891312
21319816 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21319816's digits is 31
More coming soon!

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The information we have on file for 21319816 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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