390628460 has 12 divisors (see below), whose sum is σ = 820319808. Its totient is φ = 156251376.

The previous prime is 390628453. The next prime is 390628471. The reversal of 390628460 is 64826093.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9765692 + ... + 9765731.

It is an arithmetic number, because the mean of its divisors is an integer number (68359984).

Almost surely, 2^390628460 is an apocalyptic number.

It is an amenable number.

390628460 is an abundant number, since it is smaller than the sum of its proper divisors (429691348).

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

390628460 is a wasteful number, since it uses less digits than its factorization.

390628460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19531432 (or 19531430 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 390628460 is about 19764.3229077042. The cubic root of 390628460 is about 731.0065928618.

The spelling of 390628460 in words is "three hundred ninety million, six hundred twenty-eight thousand, four hundred sixty".