2808404 has 6 divisors (see below), whose sum is σ = 4914714. Its totient is φ = 1404200.

The previous prime is 2808397. The next prime is 2808413. The reversal of 2808404 is 4048082.

2808404 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1684804 + 1123600 = 1298^2 + 1060^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 351047 + ... + 351054.

It is an arithmetic number, because the mean of its divisors is an integer number (819119).

2^2808404 is an apocalyptic number.

It is an amenable number.

2808404 is a deficient number, since it is larger than the sum of its proper divisors (2106310).

2808404 is a wasteful number, since it uses less digits than its factorization.

2808404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702105 (or 702103 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 2808404 is about 1675.8293469205. The cubic root of 2808404 is about 141.0868468876.

The spelling of 2808404 in words is "two million, eight hundred eight thousand, four hundred four".