28129274196 has 48 divisors (see below), whose sum is σ = 70043129856. Its totient is φ = 8755375104.

The previous prime is 28129274141. The next prime is 28129274221. The reversal of 28129274196 is 69147292182.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516961 + ... + 568776.

It is an arithmetic number, because the mean of its divisors is an integer number (1459231872).

Almost surely, 2^28129274196 is an apocalyptic number.

It is an amenable number.

28129274196 is an abundant number, since it is smaller than the sum of its proper divisors (41913855660).

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

28129274196 is a wasteful number, since it uses less digits than its factorization.

28129274196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085888 (or 1085886 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The spelling of 28129274196 in words is "twenty-eight billion, one hundred twenty-nine million, two hundred seventy-four thousand, one hundred ninety-six".