2778808 has 16 divisors (see below), whose sum is σ = 5229000. Its totient is φ = 1384416.

The previous prime is 2778799. The next prime is 2778823. The reversal of 2778808 is 8088772.

2778808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 3 ways as a sum of consecutive naturals, for example, 2938 + ... + 3766.

2^2778808 is an apocalyptic number.

It is an amenable number.

2778808 is a deficient number, since it is larger than the sum of its proper divisors (2450192).

2778808 is a wasteful number, since it uses less digits than its factorization.

2778808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1250 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 40.

The square root of 2778808 is about 1666.9757046820. The cubic root of 2778808 is about 140.5894871971.

The spelling of 2778808 in words is "two million, seven hundred seventy-eight thousand, eight hundred eight".