2728865199 has 16 divisors (see below), whose sum is σ = 3820879872. Its totient is φ = 1729055328.

The previous prime is 2728865189. The next prime is 2728865201. The reversal of 2728865199 is 9915688272.

It is a happy number.

It is not a de Polignac number, because 2728865199 - 2⁷ = 2728865071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728865159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115119 + ... + 136784.

It is an arithmetic number, because the mean of its divisors is an integer number (238804992).

Almost surely, 2^2728865199 is an apocalyptic number.

2728865199 is a deficient number, since it is larger than the sum of its proper divisors (1092014673).

2728865199 is a wasteful number, since it uses less digits than its factorization.

2728865199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252086.

The product of its digits is 4354560, while the sum is 57.

The square root of 2728865199 is about 52238.5413176899. The cubic root of 2728865199 is about 1397.4213074140.

The spelling of 2728865199 in words is "two billion, seven hundred twenty-eight million, eight hundred sixty-five thousand, one hundred ninety-nine".