2728868688272 has 10 divisors (see below), whose sum is σ = 5287183083558. Its totient is φ = 1364434344128.

The previous prime is 2728868688209. The next prime is 2728868688289.

2728868688272 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 1482510797056 + 1246357891216 = 1217584^2 + 1116404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2728868688272.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85277146493 + ... + 85277146524.

Almost surely, 2^{2728868688272} is an apocalyptic number.

It is an amenable number.

2728868688272 is a deficient number, since it is larger than the sum of its proper divisors (2558314395286).

2728868688272 is a wasteful number, since it uses less digits than its factorization.

2728868688272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170554293025 (or 170554293019 counting only the distinct ones).

The product of its digits is 924844032, while the sum is 74.

The spelling of 2728868688272 in words is "two trillion, seven hundred twenty-eight billion, eight hundred sixty-eight million, six hundred eighty-eight thousand, two hundred seventy-two".