390618072 has 64 divisors (see below), whose sum is σ = 1168524000. Its totient is φ = 120189312.

The previous prime is 390618071. The next prime is 390618077. The reversal of 390618072 is 270816093.

390618072 is a `hidden beast` number, since 39 + 0 + 618 + 0 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390618071) 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, 66747 + ... + 72362.

Almost surely, 2^390618072 is an apocalyptic number.

It is an amenable number.

390618072 is an abundant number, since it is smaller than the sum of its proper divisors (777905928).

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

390618072 is a wasteful number, since it uses less digits than its factorization.

390618072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139137 (or 139127 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 390618072 is about 19764.0601091982. The cubic root of 390618072 is about 731.0001129074. Note that the first 3 decimals are identical.

The spelling of 390618072 in words is "three hundred ninety million, six hundred eighteen thousand, seventy-two".