21306

21,306 is an even composite number composed of four prime numbers multiplied together.

What does the number 21306 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 16 divisors.

21306 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixteen divisors.

Prime factorization of 21306:

2 × 3 × 53 × 67

See below for interesting mathematical facts about the number 21306 from the Numbermatics database.

Names of 21306

Cardinal: 21306 can be written as Twenty-one thousand, three hundred six.

Scientific notation

Scientific notation: 2.1306 × 10⁴

Factors of 21306

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 4
Sum of prime factors: 125

Divisors of 21306

Number of divisors d(n): 16
Complete list of divisors:
1 2 3 6 53 67 106 134 159 201 318 402 3551 7102 10653 21306
Sum of all divisors σ(n): 44064
Sum of proper divisors (its aliquot sum) s(n): 22758
21306 is an abundant number, because the sum of its proper divisors (22758) is greater than itself. Its abundance is 1452

Bases of 21306

Binary: 101001100111010₂
Hexadecimal: 0x533A
Base-36: GFU

Squares and roots of 21306

21306 squared (21306²) is 453945636
21306 cubed (21306³) is 9671765720616
The square root of 21306 is 145.9657494073
The cube root of 21306 is 27.7226009899

Scales and comparisons

How big is 21306?

21,306 seconds is equal to 5 hours, 55 minutes, 6 seconds.
To count from 1 to 21,306 would take you about five 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 21306 cubic inches would be around 2.3 feet tall.

Recreational maths with 21306

21306 backwards is 60312
The number of decimal digits it has is: 5
The sum of 21306's digits is 12
More coming soon!

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The information we have on file for 21306 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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