392808 has 32 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 120768.

The previous prime is 392807. The next prime is 392809. The reversal of 392808 is 808293.

It is an interprime number because it is at equal distance from previous prime (392807) and next prime (392809).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (392803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 941.

It is an arithmetic number, because the mean of its divisors is an integer number (33075).

2³⁹²⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

392808 is an abundant number, since it is smaller than the sum of its proper divisors (665592).

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

392808 is a wasteful number, since it uses less digits than its factorization.

392808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1277 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 392808 is about 626.7439668637. The cubic root of 392808 is about 73.2363640278.

The spelling of 392808 in words is "three hundred ninety-two thousand, eight hundred eight".