390400328 has 16 divisors (see below), whose sum is σ = 733536000. Its totient is φ = 194790736.

The previous prime is 390400313. The next prime is 390400337. The reversal of 390400328 is 823004093.

It is a super-2 number, since 2×390400328² = 304824832205015168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 390400328.

It is an unprimeable number.

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, 47108 + ... + 54771.

It is an arithmetic number, because the mean of its divisors is an integer number (45846000).

Almost surely, 2^390400328 is an apocalyptic number.

It is an amenable number.

390400328 is a deficient number, since it is larger than the sum of its proper divisors (343135672).

390400328 is a wasteful number, since it uses less digits than its factorization.

390400328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102364 (or 102360 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 390400328 is about 19758.5507565712. The cubic root of 390400328 is about 730.8642594272.

The spelling of 390400328 in words is "three hundred ninety million, four hundred thousand, three hundred twenty-eight".