2218404 has 24 divisors (see below), whose sum is σ = 5205760. Its totient is φ = 735264.

The previous prime is 2218367. The next prime is 2218423. The reversal of 2218404 is 4048122.

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, 2262 + ... + 3090.

2^2218404 is an apocalyptic number.

It is an amenable number.

2218404 is an abundant number, since it is smaller than the sum of its proper divisors (2987356).

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

2218404 is a wasteful number, since it uses less digits than its factorization.

2218404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2218404 is about 1489.4307637484. The cubic root of 2218404 is about 130.4208060193.

The spelling of 2218404 in words is "two million, two hundred eighteen thousand, four hundred four".