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Properties of the Number 90
- Because 90 is divisible by 2 ...
- 90 is an even number
- 90 has parity 0
- 90 is not an odd number
- Because 90 can be factored as 2 x 45 ...
- 90 is a composite number
- 90 is not a prime number
Alternative Representations of the Number 90
- Base 2 (binary): 1011010
- Base 8 (octal): 132
- Base 16 (hexadecimal): 5A
Divisors of the Number 90
- 90 has 12 positive divisors:
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90
- The sum of the positive divisors is 234
- 90 has 11 proper divisors:
1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45
- The sum of the proper divisors is 144
- 90 is not a deficient number
- 90 is not a perfect number
- 90 is an abundant number since the sum of the proper divisors is greater than 90
More Properties of the Number 90
- 90 is not a square number
- 90 is not a cube number
- 90 is not a palindromic number
- 90 is not a Fibonacci number
- 90 is not a Lucas number
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