2865904 has 10 divisors (see below), whose sum is σ = 5552720. Its totient is φ = 1432944.

The previous prime is 2865901. The next prime is 2865913. The reversal of 2865904 is 4095682.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2865904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89544 + ... + 89575.

It is an arithmetic number, because the mean of its divisors is an integer number (555272).

2^2865904 is an apocalyptic number.

It is an amenable number.

2865904 is a deficient number, since it is larger than the sum of its proper divisors (2686816).

2865904 is a wasteful number, since it uses less digits than its factorization.

2865904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179127 (or 179121 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 2865904 is about 1692.8981067979. The cubic root of 2865904 is about 142.0432322243.

The spelling of 2865904 in words is "two million, eight hundred sixty-five thousand, nine hundred four".