2015904 has 96 divisors (see below), whose sum is σ = 6096384. Its totient is φ = 577280.

The previous prime is 2015879. The next prime is 2015921. The reversal of 2015904 is 4095102.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24247 + ... + 24329.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^2015904 is an apocalyptic number.

2015904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2015904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3048192).

2015904 is an abundant number, since it is smaller than the sum of its proper divisors (4080480).

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

2015904 is a wasteful number, since it uses less digits than its factorization.

2015904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2015904 is about 1419.8253413713. The cubic root of 2015904 is about 126.3251867278.

It can be divided in two parts, 201 and 5904, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 2015904 in words is "two million, fifteen thousand, nine hundred four".