21480

21,480 is an even composite number composed of four prime numbers multiplied together.

What does the number 21480 look like?

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

21480 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 21480:

2³ × 3 × 5 × 179

(2 × 2 × 2 × 3 × 5 × 179)

See below for interesting mathematical facts about the number 21480 from the Numbermatics database.

Names of 21480

Cardinal: 21480 can be written as Twenty-one thousand, four hundred eighty.

Scientific notation

Scientific notation: 2.148 × 10⁴

Factors of 21480

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 6
Sum of prime factors: 189

Divisors of 21480

Number of divisors d(n): 32
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 179 358 537 716 895 1074 1432 1790 2148 2685 3580 4296 5370 7160 10740 21480
Sum of all divisors σ(n): 64800
Sum of proper divisors (its aliquot sum) s(n): 43320
21480 is an abundant number, because the sum of its proper divisors (43320) is greater than itself. Its abundance is 21840

Bases of 21480

Binary: 101001111101000₂
Hexadecimal: 0x53E8
Base-36: GKO

Squares and roots of 21480

21480 squared (21480²) is 461390400
21480 cubed (21480³) is 9910665792000
The square root of 21480 is 146.5605676845
The cube root of 21480 is 27.7978639907

Scales and comparisons

How big is 21480?

21,480 seconds is equal to 5 hours, 58 minutes.
To count from 1 to 21,480 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 21480 cubic inches would be around 2.3 feet tall.

Recreational maths with 21480

21480 backwards is 08412
21480 is a Harshad number.
The number of decimal digits it has is: 5
The sum of 21480's digits is 15
More coming soon!

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The information we have on file for 21480 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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