732 is not a prime number.

A prime number has only two positive divisors: 1 and itself.

For 732, the positive divisors are :

• 1 is a divisor of 732 : $732 / 1 = 732$
• 2 is a divisor of 732 : $732 / 2 = 366$
• 3 is a divisor of 732 : $732 / 3 = 244$
• 4 is a divisor of 732 : $732 / 4 = 183$
• 6 is a divisor of 732 : $732 / 6 = 122$
• 12 is a divisor of 732 : $732 / 12 = 61$
• 61 is a divisor of 732 : $732 / 61 = 12$
• 122 is a divisor of 732 : $732 / 122 = 6$
• 183 is a divisor of 732 : $732 / 183 = 4$
• 244 is a divisor of 732 : $732 / 244 = 3$
• 366 is a divisor of 732 : $732 / 366 = 2$
• 732 is a divisor of 732 : $732 / 732 = 1$

Since 732 is divisible by 2, 3, 4, 6, 12, 61, 122, 183, 244 and 366, it has divisors other than 1 and itself.

Therefore, 732 is not a prime number.