28174688856 has 96 divisors (see below), whose sum is σ = 80355132000. Its totient is φ = 8900762112.

The previous prime is 28174688851. The next prime is 28174688873. The reversal of 28174688856 is 65888647182.

It is a junction number, because it is equal to n+sod(n) for n = 28174688793 and 28174688802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28174688851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102460 + ... + 258548.

It is an arithmetic number, because the mean of its divisors is an integer number (837032625).

Almost surely, 2^28174688856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28174688856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40177566000).

28174688856 is an abundant number, since it is smaller than the sum of its proper divisors (52180443144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28174688856 is a wasteful number, since it uses less digits than its factorization.

28174688856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156233 (or 156226 counting only the distinct ones).

The product of its digits is 41287680, while the sum is 63.

The spelling of 28174688856 in words is "twenty-eight billion, one hundred seventy-four million, six hundred eighty-eight thousand, eight hundred fifty-six".