30

30 is an even composite number composed of three prime numbers multiplied together.

What does the number 30 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

30 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

Prime factorization of 30:

2 × 3 × 5

See below for interesting mathematical facts about the number 30 from the Numbermatics database.

Names of 30

Cardinal: 30 can be written as Thirty.

Scientific notation

Scientific notation: 3 × 10¹

Factors of 30

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 3
Sum of prime factors: 10

Divisors of 30

Number of divisors d(n): 8
Complete list of divisors:
1 2 3 5 6 10 15 30
Sum of all divisors σ(n): 72
Sum of proper divisors (its aliquot sum) s(n): 42
30 is an abundant number, because the sum of its proper divisors (42) is greater than itself. Its abundance is 12

Bases of 30

Binary: 11110₂
Hexadecimal: 0x1E
Base-36: U

Squares and roots of 30

30 squared (30²) is 900
30 cubed (30³) is 27000
The square root of 30 is 5.4772255751
The cube root of 30 is 3.1072325059

Scales and comparisons

How big is 30?

A cube with a volume of 30 cubic inches would be around 0.3 feet tall.

Recreational maths with 30

30 backwards is 03
30 is a Harshad number.
The number of decimal digits it has is: 2
The sum of 30's digits is 3
More coming soon!

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The information we have on file for 30 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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