392945228 has 12 divisors (see below), whose sum is σ = 740550720. Its totient is φ = 181359312.

The previous prime is 392945227. The next prime is 392945237. The reversal of 392945228 is 822549293.

It is not an unprimeable number, because it can be changed into a prime (392945221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3778268 + ... + 3778371.

It is an arithmetic number, because the mean of its divisors is an integer number (61712560).

Almost surely, 2^392945228 is an apocalyptic number.

It is an amenable number.

392945228 is a deficient number, since it is larger than the sum of its proper divisors (347605492).

392945228 is a wasteful number, since it uses less digits than its factorization.

392945228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7556656 (or 7556654 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 392945228 is about 19822.8461125036. The cubic root of 392945228 is about 732.4489144212.

The spelling of 392945228 in words is "three hundred ninety-two million, nine hundred forty-five thousand, two hundred twenty-eight".