2560404 has 96 divisors (see below), whose sum is σ = 7934976. Its totient is φ = 622080.

The previous prime is 2560399. The next prime is 2560417. The reversal of 2560404 is 4040652.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

2560404 is a modest number, since divided by 404 gives 256 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15627 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (82656).

2^2560404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2560404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3967488).

2560404 is an abundant number, since it is smaller than the sum of its proper divisors (5374572).

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

2560404 is a wasteful number, since it uses less digits than its factorization.

2560404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2560404 is about 1600.1262450194. The cubic root of 2560404 is about 136.8052715044.

The spelling of 2560404 in words is "two million, five hundred sixty thousand, four hundred four".