2728368665 has 8 divisors (see below), whose sum is σ = 3571682688. Its totient is φ = 1984268080.

The previous prime is 2728368611. The next prime is 2728368673. The reversal of 2728368665 is 5668638272.

2728368665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2728368665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24803297 + ... + 24803406.

It is an arithmetic number, because the mean of its divisors is an integer number (446460336).

Almost surely, 2^2728368665 is an apocalyptic number.

It is an amenable number.

2728368665 is a deficient number, since it is larger than the sum of its proper divisors (843314023).

2728368665 is a wasteful number, since it uses less digits than its factorization.

2728368665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49606719.

The product of its digits is 5806080, while the sum is 53.

The square root of 2728368665 is about 52233.7885376889. The cubic root of 2728368665 is about 1397.3365457726.

The spelling of 2728368665 in words is "two billion, seven hundred twenty-eight million, three hundred sixty-eight thousand, six hundred sixty-five".