3218404 has 24 divisors (see below), whose sum is σ = 6491520. Its totient is φ = 1367616.

The previous prime is 3218399. The next prime is 3218417. The reversal of 3218404 is 4048123.

3218404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3417 + ... + 4255.

It is an arithmetic number, because the mean of its divisors is an integer number (270480).

Almost surely, 2^3218404 is an apocalyptic number.

It is an amenable number.

3218404 is an abundant number, since it is smaller than the sum of its proper divisors (3273116).

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

3218404 is a wasteful number, since it uses less digits than its factorization.

3218404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 3218404 is about 1793.9910813602. The cubic root of 3218404 is about 147.6432239015.

The spelling of 3218404 in words is "three million, two hundred eighteen thousand, four hundred four".