394329028 has 12 divisors (see below), whose sum is σ = 690217920. Its totient is φ = 197123912.

The previous prime is 394328993. The next prime is 394329073. The reversal of 394329028 is 820923493.

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, 26025 + ... + 38287.

It is an arithmetic number, because the mean of its divisors is an integer number (57518160).

Almost surely, 2^394329028 is an apocalyptic number.

It is an amenable number.

394329028 is a deficient number, since it is larger than the sum of its proper divisors (295888892).

394329028 is a wasteful number, since it uses less digits than its factorization.

394329028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20306 (or 20304 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 394329028 is about 19857.7196072459. The cubic root of 394329028 is about 733.3077070017.

The spelling of 394329028 in words is "three hundred ninety-four million, three hundred twenty-nine thousand, twenty-eight".