392218 has 8 divisors (see below), whose sum is σ = 597312. Its totient is φ = 193116.

The previous prime is 392213. The next prime is 392221. The reversal of 392218 is 812293.

392218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a cake number, because a cake can be divided into 392218 parts by 133 planar cuts.

It is a junction number, because it is equal to n+sod(n) for n = 392192 and 392201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330 + ... + 1597.

It is an arithmetic number, because the mean of its divisors is an integer number (74664).

2³⁹²²¹⁸ is an apocalyptic number.

392218 is a deficient number, since it is larger than the sum of its proper divisors (205094).

392218 is a wasteful number, since it uses less digits than its factorization.

392218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996.

The product of its digits is 864, while the sum is 25.

The square root of 392218 is about 626.2731033663. The cubic root of 392218 is about 73.1996785000.

The spelling of 392218 in words is "three hundred ninety-two thousand, two hundred eighteen".