2728928 has 24 divisors (see below), whose sum is σ = 5429592. Its totient is φ = 1350016.

The previous prime is 2728907. The next prime is 2728931. The reversal of 2728928 is 8298272.

It is a junction number, because it is equal to n+sod(n) for n = 2728891 and 2728900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3026 + ... + 3822.

It is an arithmetic number, because the mean of its divisors is an integer number (226233).

2^2728928 is an apocalyptic number.

It is an amenable number.

2728928 is a deficient number, since it is larger than the sum of its proper divisors (2700664).

2728928 is a wasteful number, since it uses less digits than its factorization.

2728928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 906 counting only the distinct ones).

The product of its digits is 32256, while the sum is 38.

The square root of 2728928 is about 1651.9467303760. The cubic root of 2728928 is about 139.7432027228.

The spelling of 2728928 in words is "two million, seven hundred twenty-eight thousand, nine hundred twenty-eight".