90
Number 90 properties
- 90 is an even number.
- 90 is a Harshad number, which means it is divisible by the sum of its digits (90 = 9, and 90 is divisible by 9).
Number 90 - properties and curiosities
90 (number)
Prime factorization
Prime factorization of 90: 2 × 3^2 × 5.
Divisors
Divisor count: 12
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
Factors of 90 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90.
Representations
In octal, 90 is represented as 132.
In binary, 90 is represented as 1011010.
In hex, 90 is represented as 5A.
Roman numeral: XC
Curiosities
- 90 is divisible by the sum of its digits.
Related numbers
Quick answers
Is 90 prime?
No, 90 is not prime.
What are the factors of 90?
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
What is 90 in binary?
1011010