392242218 has 16 divisors (see below), whose sum is σ = 787612896. Its totient is φ = 130226000.

The previous prime is 392242183. The next prime is 392242237. The reversal of 392242218 is 812242293.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 128721 + ... + 131732.

It is an arithmetic number, because the mean of its divisors is an integer number (49225806).

Almost surely, 2^392242218 is an apocalyptic number.

392242218 is an abundant number, since it is smaller than the sum of its proper divisors (395370678).

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

392242218 is a wasteful number, since it uses less digits than its factorization.

392242218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260709.

The product of its digits is 13824, while the sum is 33.

The square root of 392242218 is about 19805.1058568239. The cubic root of 392242218 is about 732.0118507144.

The spelling of 392242218 in words is "three hundred ninety-two million, two hundred forty-two thousand, two hundred eighteen".