2163204 has 18 divisors (see below), whose sum is σ = 5468190. Its totient is φ = 721056.

The previous prime is 2163193. The next prime is 2163221. The reversal of 2163204 is 4023612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2160900 + 2304 = 1470^2 + 48^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30009 + ... + 30080.

2^2163204 is an apocalyptic number.

It is an amenable number.

2163204 is an abundant number, since it is smaller than the sum of its proper divisors (3304986).

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

2163204 is a wasteful number, since it uses less digits than its factorization.

2163204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60099 (or 60094 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2163204 is about 1470.7834646881. The cubic root of 2163204 is about 129.3299647214.

Adding to 2163204 its reverse (4023612), we get a palindrome (6186816).

The spelling of 2163204 in words is "two million, one hundred sixty-three thousand, two hundred four".