2806405204 has 6 divisors (see below), whose sum is σ = 4911209114. Its totient is φ = 1403202600.

The previous prime is 2806405201. The next prime is 2806405207. The reversal of 2806405204 is 4025046082.

It is an interprime number because it is at equal distance from previous prime (2806405201) and next prime (2806405207).

It can be written as a sum of positive squares in only one way, i.e., 1415264400 + 1391140804 = 37620^2 + 37298^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2806405201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350800647 + ... + 350800654.

Almost surely, 2^2806405204 is an apocalyptic number.

It is an amenable number.

2806405204 is a deficient number, since it is larger than the sum of its proper divisors (2104803910).

2806405204 is a wasteful number, since it uses less digits than its factorization.

2806405204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701601305 (or 701601303 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 2806405204 is about 52975.5151367120. The cubic root of 2806405204 is about 1410.5336752184.

The spelling of 2806405204 in words is "two billion, eight hundred six million, four hundred five thousand, two hundred four".