2728789 has 16 divisors (see below), whose sum is σ = 3449088. Its totient is φ = 2103552.

The previous prime is 2728777. The next prime is 2728801. The reversal of 2728789 is 9878272.

2728789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2728777) and next prime (2728801).

It is a cyclic number.

It is not a de Polignac number, because 2728789 - 2⁹ = 2728277 is a prime.

It is a Duffinian number.

2728789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728769) 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, 2239 + ... + 3235.

It is an arithmetic number, because the mean of its divisors is an integer number (215568).

2^2728789 is an apocalyptic number.

It is an amenable number.

2728789 is a deficient number, since it is larger than the sum of its proper divisors (720299).

2728789 is a wasteful number, since it uses less digits than its factorization.

2728789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 112896, while the sum is 43.

The square root of 2728789 is about 1651.9046582657. The cubic root of 2728789 is about 139.7408300408.

The spelling of 2728789 in words is "two million, seven hundred twenty-eight thousand, seven hundred eighty-nine".