390578056 has 32 divisors (see below), whose sum is σ = 800150400. Its totient is φ = 177259840.

The previous prime is 390578051. The next prime is 390578057. The reversal of 390578056 is 650875093.

It is not an unprimeable number, because it can be changed into a prime (390578051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60186 + ... + 66358.

It is an arithmetic number, because the mean of its divisors is an integer number (25004700).

Almost surely, 2^390578056 is an apocalyptic number.

It is an amenable number.

390578056 is an abundant number, since it is smaller than the sum of its proper divisors (409572344).

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

390578056 is a wasteful number, since it uses less digits than its factorization.

390578056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909 (or 6905 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 390578056 is about 19763.0477406700. The cubic root of 390578056 is about 730.9751501612.

The spelling of 390578056 in words is "three hundred ninety million, five hundred seventy-eight thousand, fifty-six".