2728806 has 32 divisors (see below), whose sum is σ = 5971968. Its totient is φ = 827520.

The previous prime is 2728801. The next prime is 2728807. The reversal of 2728806 is 6088272.

2728806 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 (2728801) 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 15 ways as a sum of consecutive naturals, for example, 2731 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (186624).

2^2728806 is an apocalyptic number.

2728806 is an abundant number, since it is smaller than the sum of its proper divisors (3243162).

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

2728806 is a wasteful number, since it uses less digits than its factorization.

2728806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 2728806 is about 1651.9098038331. The cubic root of 2728806 is about 139.7411202293.

The spelling of 2728806 in words is "two million, seven hundred twenty-eight thousand, eight hundred six".