2628904 has 16 divisors (see below), whose sum is σ = 4948020. Its totient is φ = 1309440.

The previous prime is 2628889. The next prime is 2628911. The reversal of 2628904 is 4098262.

It can be written as a sum of positive squares in 2 ways, for example, as 2566404 + 62500 = 1602^2 + 250^2 .

It is a super-2 number, since 2×2628904² = 13822272482432, which contains 22 as substring.

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, 2544 + ... + 3424.

2^2628904 is an apocalyptic number.

It is an amenable number.

2628904 is a deficient number, since it is larger than the sum of its proper divisors (2319116).

2628904 is a wasteful number, since it uses less digits than its factorization.

2628904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260 (or 1256 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2628904 is about 1621.3895275349. The cubic root of 2628904 is about 138.0145612304.

The spelling of 2628904 in words is "two million, six hundred twenty-eight thousand, nine hundred four".