390642274 has 16 divisors (see below), whose sum is σ = 639550080. Its totient is φ = 177476560.

The previous prime is 390642251. The next prime is 390642289. The reversal of 390642274 is 472246093.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65772 + ... + 71464.

It is an arithmetic number, because the mean of its divisors is an integer number (39971880).

Almost surely, 2^390642274 is an apocalyptic number.

390642274 is a deficient number, since it is larger than the sum of its proper divisors (248907806).

390642274 is a wasteful number, since it uses less digits than its factorization.

390642274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8825.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 390642274 is about 19764.6723726957. The cubic root of 390642274 is about 731.0152097506.

The spelling of 390642274 in words is "three hundred ninety million, six hundred forty-two thousand, two hundred seventy-four".