392240 has 20 divisors (see below), whose sum is σ = 912144. Its totient is φ = 156864.

The previous prime is 392239. The next prime is 392251. The reversal of 392240 is 42293.

392240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 2372 + ... + 2531.

2³⁹²²⁴⁰ is an apocalyptic number.

It is an amenable number.

392240 is an abundant number, since it is smaller than the sum of its proper divisors (519904).

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

392240 is a wasteful number, since it uses less digits than its factorization.

392240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4916 (or 4910 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 392240 is about 626.2906673422. The cubic root of 392240 is about 73.2010470950.

The spelling of 392240 in words is "three hundred ninety-two thousand, two hundred forty".