2509804 has 12 divisors (see below), whose sum is σ = 4791528. Its totient is φ = 1140800.

The previous prime is 2509777. The next prime is 2509807. The reversal of 2509804 is 4089052.

It is a happy number.

It is a super-2 number, since 2×2509804² = 12598232236832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2509807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28477 + ... + 28564.

It is an arithmetic number, because the mean of its divisors is an integer number (399294).

2^2509804 is an apocalyptic number.

It is an amenable number.

2509804 is a deficient number, since it is larger than the sum of its proper divisors (2281724).

2509804 is a wasteful number, since it uses less digits than its factorization.

2509804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57056 (or 57054 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2509804 is about 1584.2360935164. The cubic root of 2509804 is about 135.8980637531.

The spelling of 2509804 in words is "two million, five hundred nine thousand, eight hundred four".