28506051196 has 96 divisors (see below), whose sum is σ = 61250309120. Its totient is φ = 11337408000.

The previous prime is 28506051191. The next prime is 28506051221. The reversal of 28506051196 is 69115060582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28506051191) 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 31 ways as a sum of consecutive naturals, for example, 5861806 + ... + 5866666.

Almost surely, 2^28506051196 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 28506051196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30625154560).

28506051196 is an abundant number, since it is smaller than the sum of its proper divisors (32744257924).

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

28506051196 is a wasteful number, since it uses less digits than its factorization.

28506051196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5115 (or 5113 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 43.

The spelling of 28506051196 in words is "twenty-eight billion, five hundred six million, fifty-one thousand, one hundred ninety-six".