2804865 has 16 divisors (see below), whose sum is σ = 5129088. Its totient is φ = 1282176.

The previous prime is 2804861. The next prime is 2804887. The reversal of 2804865 is 5684082.

It is not a de Polignac number, because 2804865 - 2² = 2804861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2804861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13252 + ... + 13461.

It is an arithmetic number, because the mean of its divisors is an integer number (320568).

2^2804865 is an apocalyptic number.

It is an amenable number.

2804865 is a deficient number, since it is larger than the sum of its proper divisors (2324223).

2804865 is a wasteful number, since it uses less digits than its factorization.

2804865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26728.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 2804865 is about 1674.7731189627. The cubic root of 2804865 is about 141.0275586191.

The spelling of 2804865 in words is "two million, eight hundred four thousand, eight hundred sixty-five".