28169779174 has 16 divisors (see below), whose sum is σ = 43623207936. Its totient is φ = 13628824200.

The previous prime is 28169779139. The next prime is 28169779181. The reversal of 28169779174 is 47197796182.

It is a congruent 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, 568119 + ... + 615709.

It is an arithmetic number, because the mean of its divisors is an integer number (2726450496).

Almost surely, 2^28169779174 is an apocalyptic number.

28169779174 is a deficient number, since it is larger than the sum of its proper divisors (15453428762).

28169779174 is a wasteful number, since it uses less digits than its factorization.

28169779174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57171.

The product of its digits is 10668672, while the sum is 61.

The spelling of 28169779174 in words is "twenty-eight billion, one hundred sixty-nine million, seven hundred seventy-nine thousand, one hundred seventy-four".