390732 has 12 divisors (see below), whose sum is σ = 911736. Its totient is φ = 130240.

The previous prime is 390727. The next prime is 390737. The reversal of 390732 is 237093.

It is an interprime number because it is at equal distance from previous prime (390727) and next prime (390737).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390732.

It is not an unprimeable number, because it can be changed into a prime (390737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16269 + ... + 16292.

It is an arithmetic number, because the mean of its divisors is an integer number (75978).

2³⁹⁰⁷³² is an apocalyptic number.

It is an amenable number.

390732 is an abundant number, since it is smaller than the sum of its proper divisors (521004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390732 is a wasteful number, since it uses less digits than its factorization.

390732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32568 (or 32566 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 390732 is about 625.0855941389. The cubic root of 390732 is about 73.1071174038.

The spelling of 390732 in words is "three hundred ninety thousand, seven hundred thirty-two".