390330628 has 6 divisors (see below), whose sum is σ = 683078606. Its totient is φ = 195165312.

The previous prime is 390330583. The next prime is 390330679. The reversal of 390330628 is 826033093.

It can be written as a sum of positive squares in only one way, i.e., 363207364 + 27123264 = 19058^2 + 5208^2 .

It is a junction number, because it is equal to n+sod(n) for n = 390330593 and 390330602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48791325 + ... + 48791332.

Almost surely, 2^390330628 is an apocalyptic number.

It is an amenable number.

390330628 is a deficient number, since it is larger than the sum of its proper divisors (292747978).

390330628 is a wasteful number, since it uses less digits than its factorization.

390330628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97582661 (or 97582659 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 390330628 is about 19756.7868845114. The cubic root of 390330628 is about 730.8207619648.

The spelling of 390330628 in words is "three hundred ninety million, three hundred thirty thousand, six hundred twenty-eight".