2604402 has 24 divisors (see below), whose sum is σ = 5782140. Its totient is φ = 846720.

The previous prime is 2604401. The next prime is 2604431. The reversal of 2604402 is 2044062.

2604402 is a `hidden beast` number, since 260 + 4 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1962801 + 641601 = 1401^2 + 801^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2604401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1027 + ... + 2502.

2^2604402 is an apocalyptic number.

2604402 is an abundant number, since it is smaller than the sum of its proper divisors (3177738).

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

2604402 is a wasteful number, since it uses less digits than its factorization.

2604402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578 (or 3575 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2604402 is about 1613.8159746390. The cubic root of 2604402 is about 137.5844461980.

Adding to 2604402 its reverse (2044062), we get a palindrome (4648464).

The spelling of 2604402 in words is "two million, six hundred four thousand, four hundred two".