21450

21,450 is an even composite number composed of five prime numbers multiplied together.

What does the number 21450 look like?

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

21450 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21450:

2 × 3 × 5² × 11 × 13

(2 × 3 × 5 × 5 × 11 × 13)

See below for interesting mathematical facts about the number 21450 from the Numbermatics database.

Names of 21450

Cardinal: 21450 can be written as Twenty-one thousand, four hundred fifty.

Scientific notation

Scientific notation: 2.145 × 10⁴

Factors of 21450

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 34

Divisors of 21450

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 5 6 10 11 13 15 22 25 26 30 33 39 50 55 65 66 75 78 110 130 143 150 165 195 275 286 325 330 390 429 550 650 715 825 858 975 1430 1650 1950 2145 3575 4290 7150 10725 21450
Sum of all divisors σ(n): 62496
Sum of proper divisors (its aliquot sum) s(n): 41046
21450 is an abundant number, because the sum of its proper divisors (41046) is greater than itself. Its abundance is 19596

Bases of 21450

Binary: 101001111001010₂
Hexadecimal: 0x53CA
Base-36: GJU

Squares and roots of 21450

21450 squared (21450²) is 460102500
21450 cubed (21450³) is 9869198625000
The square root of 21450 is 146.4581851587
The cube root of 21450 is 27.7849166837

Scales and comparisons

How big is 21450?

21,450 seconds is equal to 5 hours, 57 minutes, 30 seconds.
To count from 1 to 21,450 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 21450 cubic inches would be around 2.3 feet tall.

Recreational maths with 21450

21450 backwards is 05412
The number of decimal digits it has is: 5
The sum of 21450's digits is 12
More coming soon!

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The information we have on file for 21450 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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