No - forty is not a perfect number. A perfect number is a number equal to the sum of all its factors apart from itself. The closest perfect numbers to 40 in each direction are:
lower: 28
higher: 496
Chat with our AI personalities
No.
It is not a perfect cube.
because it needs to be a prime number and it has to be simplified
36
The two perfect numbers less than 40 are 6 (1+2+3) and 28 (1+2+4+7+14).