2778116 has 24 divisors (see below), whose sum is σ = 5363904. Its totient is φ = 1248480.

The previous prime is 2778109. The next prime is 2778121. The reversal of 2778116 is 6118772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226 + ... + 4838.

It is an arithmetic number, because the mean of its divisors is an integer number (223496).

2^2778116 is an apocalyptic number.

It is an amenable number.

2778116 is a deficient number, since it is larger than the sum of its proper divisors (2585788).

2778116 is a wasteful number, since it uses less digits than its factorization.

2778116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 729 counting only the distinct ones).

The product of its digits is 4704, while the sum is 32.

The square root of 2778116 is about 1666.7681302449. The cubic root of 2778116 is about 140.5778160055.

The spelling of 2778116 in words is "two million, seven hundred seventy-eight thousand, one hundred sixteen".