2776728 has 32 divisors (see below), whose sum is σ = 7004160. Its totient is φ = 917280.

The previous prime is 2776727. The next prime is 2776733. The reversal of 2776728 is 8276772.

2776728 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 not an unprimeable number, because it can be changed into a prime (2776727) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2593 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (218880).

2^2776728 is an apocalyptic number.

It is an amenable number.

2776728 is an abundant number, since it is smaller than the sum of its proper divisors (4227432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2776728 is a wasteful number, since it uses less digits than its factorization.

2776728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1043 counting only the distinct ones).

The product of its digits is 65856, while the sum is 39.

The square root of 2776728 is about 1666.3517035728. The cubic root of 2776728 is about 140.5544003150.

The spelling of 2776728 in words is "two million, seven hundred seventy-six thousand, seven hundred twenty-eight".