2728758231 has 12 divisors (see below), whose sum is σ = 3950907480. Its totient is φ = 1814848560.

The previous prime is 2728758187. The next prime is 2728758233. The reversal of 2728758231 is 1328578272.

It is not a de Polignac number, because 2728758231 - 2⁹ = 2728757719 is a prime.

It is a super-2 number, since 2×2728758231² = 14892242966500498722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728758233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356301 + ... + 363878.

It is an arithmetic number, because the mean of its divisors is an integer number (329242290).

Almost surely, 2^2728758231 is an apocalyptic number.

2728758231 is a deficient number, since it is larger than the sum of its proper divisors (1222149249).

2728758231 is a wasteful number, since it uses less digits than its factorization.

2728758231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720606 (or 720603 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 2728758231 is about 52237.5174658980. The cubic root of 2728758231 is about 1397.4030481372.

The spelling of 2728758231 in words is "two billion, seven hundred twenty-eight million, seven hundred fifty-eight thousand, two hundred thirty-one".