2560004 has 18 divisors (see below), whose sum is σ = 4645914. Its totient is φ = 1234240.

The previous prime is 2559989. The next prime is 2560021. The reversal of 2560004 is 4000652.

It can be written as a sum of positive squares in 3 ways, for example, as 6400 + 2553604 = 80^2 + 1598^2 .

It is a congruent number.

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, 2984 + ... + 3744.

2^2560004 is an apocalyptic number.

It is an amenable number.

2560004 is a deficient number, since it is larger than the sum of its proper divisors (2085910).

2560004 is a wasteful number, since it uses less digits than its factorization.

2560004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 792 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2560004 is about 1600.0012499995. The cubic root of 2560004 is about 136.7981469831.

Adding to 2560004 its reverse (4000652), we get a palindrome (6560656).

The spelling of 2560004 in words is "two million, five hundred sixty thousand, four".