2728080728 has 16 divisors (see below), whose sum is σ = 5121470760. Its totient is φ = 1362355200.

The previous prime is 2728080703. The next prime is 2728080749. The reversal of 2728080728 is 8270808272.

It is a happy number.

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, 203753 + ... + 216728.

Almost surely, 2^2728080728 is an apocalyptic number.

It is an amenable number.

2728080728 is a deficient number, since it is larger than the sum of its proper divisors (2393390032).

2728080728 is a wasteful number, since it uses less digits than its factorization.

2728080728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421298 (or 421294 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 44.

The square root of 2728080728 is about 52231.0322318064. The cubic root of 2728080728 is about 1397.2873883093.

The spelling of 2728080728 in words is "two billion, seven hundred twenty-eight million, eighty thousand, seven hundred twenty-eight".