2856904 has 16 divisors (see below), whose sum is σ = 5389020. Its totient is φ = 1419840.

The previous prime is 2856883. The next prime is 2856923. The reversal of 2856904 is 4096582.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2220100 + 636804 = 1490^2 + 798^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2856904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462 + ... + 2434.

2^2856904 is an apocalyptic number.

It is an amenable number.

2856904 is a deficient number, since it is larger than the sum of its proper divisors (2532116).

2856904 is a wasteful number, since it uses less digits than its factorization.

2856904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2156 counting only the distinct ones).

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

The square root of 2856904 is about 1690.2378530846. The cubic root of 2856904 is about 141.8943868531.

The spelling of 2856904 in words is "two million, eight hundred fifty-six thousand, nine hundred four".