390626320 has 80 divisors (see below), whose sum is σ = 1092608640. Its totient is φ = 126876672.

The previous prime is 390626293. The next prime is 390626321. The reversal of 390626320 is 23626093.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (390626321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7717 + ... + 28996.

It is an arithmetic number, because the mean of its divisors is an integer number (13657608).

Almost surely, 2^390626320 is an apocalyptic number.

It is an amenable number.

390626320 is an abundant number, since it is smaller than the sum of its proper divisors (701982320).

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

390626320 is a wasteful number, since it uses less digits than its factorization.

390626320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36752 (or 36746 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 390626320 is about 19764.2687696763. The cubic root of 390626320 is about 731.0052579557.

The spelling of 390626320 in words is "three hundred ninety million, six hundred twenty-six thousand, three hundred twenty".