2728869 has 16 divisors (see below), whose sum is σ = 4275264. Its totient is φ = 1526400.

The previous prime is 2728853. The next prime is 2728877. The reversal of 2728869 is 9688272.

It is a happy number.

2728869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2728869 - 2⁴ = 2728853 is a prime.

It is a super-2 number, since 2×2728869² = 14893452038322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2728869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728819) 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, 2752 + ... + 3609.

It is an arithmetic number, because the mean of its divisors is an integer number (267204).

2^2728869 is an apocalyptic number.

It is an amenable number.

2728869 is a deficient number, since it is larger than the sum of its proper divisors (1546395).

2728869 is a wasteful number, since it uses less digits than its factorization.

2728869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388.

The product of its digits is 96768, while the sum is 42.

The square root of 2728869 is about 1651.9288725608. The cubic root of 2728869 is about 139.7421956230.

The spelling of 2728869 in words is "two million, seven hundred twenty-eight thousand, eight hundred sixty-nine".