2015804 has 12 divisors (see below), whose sum is σ = 4031664. Its totient is φ = 863904.

The previous prime is 2015801. The next prime is 2015831. The reversal of 2015804 is 4085102.

2015804 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35969 + ... + 36024.

It is an arithmetic number, because the mean of its divisors is an integer number (335972).

2^2015804 is an apocalyptic number.

It is an amenable number.

2015804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2015804 is a wasteful number, since it uses less digits than its factorization.

2015804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72004 (or 72002 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 2015804 is about 1419.7901253354. The cubic root of 2015804 is about 126.3230978837.

The spelling of 2015804 in words is "two million, fifteen thousand, eight hundred four".