28768339191 has 16 divisors (see below), whose sum is σ = 38784211200. Its totient is φ = 18966755328.

The previous prime is 28768339189. The next prime is 28768339219. The reversal of 28768339191 is 19193386782.

It is not a de Polignac number, because 28768339191 - 2¹ = 28768339189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768339121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27051 + ... + 241388.

It is an arithmetic number, because the mean of its divisors is an integer number (2424013200).

Almost surely, 2^28768339191 is an apocalyptic number.

28768339191 is a deficient number, since it is larger than the sum of its proper divisors (10015872009).

28768339191 is a wasteful number, since it uses less digits than its factorization.

28768339191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268838.

The product of its digits is 3919104, while the sum is 57.

The spelling of 28768339191 in words is "twenty-eight billion, seven hundred sixty-eight million, three hundred thirty-nine thousand, one hundred ninety-one".