2220904 has 16 divisors (see below), whose sum is σ = 4759200. Its totient is φ = 951792.

The previous prime is 2220893. The next prime is 2220913. The reversal of 2220904 is 4090222.

It is a happy number.

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, 19774 + ... + 19885.

It is an arithmetic number, because the mean of its divisors is an integer number (297450).

2^2220904 is an apocalyptic number.

It is an amenable number.

2220904 is an abundant number, since it is smaller than the sum of its proper divisors (2538296).

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

2220904 is a wasteful number, since it uses less digits than its factorization.

2220904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39672 (or 39668 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2220904 is about 1490.2697742355. The cubic root of 2220904 is about 130.4697796075.

The spelling of 2220904 in words is "two million, two hundred twenty thousand, nine hundred four".