390756 has 12 divisors (see below), whose sum is σ = 911792. Its totient is φ = 130248.

The previous prime is 390751. The next prime is 390763. The reversal of 390756 is 657093.

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390756.

It is not an unprimeable number, because it can be changed into a prime (390751) 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, 16270 + ... + 16293.

2³⁹⁰⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

390756 is an abundant number, since it is smaller than the sum of its proper divisors (521036).

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

390756 is a wasteful number, since it uses less digits than its factorization.

390756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32570 (or 32568 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 390756 is about 625.1047912150. The cubic root of 390756 is about 73.1086141969.

The spelling of 390756 in words is "three hundred ninety thousand, seven hundred fifty-six".