28075731189 has 16 divisors (see below), whose sum is σ = 40918639104. Its totient is φ = 16981756400.

The previous prime is 28075731139. The next prime is 28075731199. The reversal of 28075731189 is 98113757082.

It is a cyclic number.

It is not a de Polignac number, because 28075731189 - 2⁸ = 28075730933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075731139) 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, 829107 + ... + 862304.

It is an arithmetic number, because the mean of its divisors is an integer number (2557414944).

Almost surely, 2^28075731189 is an apocalyptic number.

It is an amenable number.

28075731189 is a deficient number, since it is larger than the sum of its proper divisors (12842907915).

28075731189 is a wasteful number, since it uses less digits than its factorization.

28075731189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691928.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 28075731189 in words is "twenty-eight billion, seventy-five million, seven hundred thirty-one thousand, one hundred eighty-nine".