2728393848391 has 4 divisors (see below), whose sum is σ = 2728415284192. Its totient is φ = 2728372412592.

The previous prime is 2728393848371. The next prime is 2728393848437. The reversal of 2728393848391 is 1938483938272.

2728393848391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2728393848391 - 2⁵ = 2728393848359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728393848331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10525830 + ... + 10781923.

It is an arithmetic number, because the mean of its divisors is an integer number (682103821048).

Almost surely, 2^{2728393848391} is an apocalyptic number.

2728393848391 is a deficient number, since it is larger than the sum of its proper divisors (21435801).

2728393848391 is a wasteful number, since it uses less digits than its factorization.

2728393848391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21435800.

The product of its digits is 125411328, while the sum is 67.

The spelling of 2728393848391 in words is "two trillion, seven hundred twenty-eight billion, three hundred ninety-three million, eight hundred forty-eight thousand, three hundred ninety-one".