2805405404 has 24 divisors (see below), whose sum is σ = 5392544640. Its totient is φ = 1271098224.

The previous prime is 2805405397. The next prime is 2805405409. The reversal of 2805405404 is 4045045082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805405409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800714 + ... + 804209.

It is an arithmetic number, because the mean of its divisors is an integer number (224689360).

Almost surely, 2^2805405404 is an apocalyptic number.

It is an amenable number.

2805405404 is a deficient number, since it is larger than the sum of its proper divisors (2587139236).

2805405404 is a wasteful number, since it uses less digits than its factorization.

2805405404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604969 (or 1604967 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 32.

The square root of 2805405404 is about 52966.0778612123. The cubic root of 2805405404 is about 1410.3661514089.

The spelling of 2805405404 in words is "two billion, eight hundred five million, four hundred five thousand, four hundred four".