2728887 has 16 divisors (see below), whose sum is σ = 4185600. Its totient is φ = 1549152.

The previous prime is 2728883. The next prime is 2728889. The reversal of 2728887 is 7888272.

It is not a de Polignac number, because 2728887 - 2² = 2728883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3853 + ... + 4505.

It is an arithmetic number, because the mean of its divisors is an integer number (261600).

2^2728887 is an apocalyptic number.

2728887 is a deficient number, since it is larger than the sum of its proper divisors (1456713).

2728887 is a wasteful number, since it uses less digits than its factorization.

2728887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862.

The product of its digits is 100352, while the sum is 42.

The square root of 2728887 is about 1651.9343207283. The cubic root of 2728887 is about 139.7425028753.

The spelling of 2728887 in words is "two million, seven hundred twenty-eight thousand, eight hundred eighty-seven".