2405404 has 12 divisors (see below), whose sum is σ = 4224024. Its totient is φ = 1198544.

The previous prime is 2405399. The next prime is 2405437. The reversal of 2405404 is 4045042.

It is a congruent number.

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, 522 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (352002).

2^2405404 is an apocalyptic number.

It is an amenable number.

2405404 is a deficient number, since it is larger than the sum of its proper divisors (1818620).

2405404 is a wasteful number, since it uses less digits than its factorization.

2405404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2084 (or 2082 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2405404 is about 1550.9364912852. The cubic root of 2405404 is about 133.9870040118.

It can be divided in two parts, 2405 and 404, that added together give a square (2809 = 53²).

The spelling of 2405404 in words is "two million, four hundred five thousand, four hundred four".