28876778124 has 24 divisors (see below), whose sum is σ = 67792522560. Its totient is φ = 9566539344.

The previous prime is 28876778069. The next prime is 28876778137. The reversal of 28876778124 is 42187767882.

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, 7379634 + ... + 7383545.

It is an arithmetic number, because the mean of its divisors is an integer number (2824688440).

Almost surely, 2^28876778124 is an apocalyptic number.

It is an amenable number.

28876778124 is an abundant number, since it is smaller than the sum of its proper divisors (38915744436).

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

28876778124 is a wasteful number, since it uses less digits than its factorization.

28876778124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14763349 (or 14763347 counting only the distinct ones).

The product of its digits is 16859136, while the sum is 60.

The spelling of 28876778124 in words is "twenty-eight billion, eight hundred seventy-six million, seven hundred seventy-eight thousand, one hundred twenty-four".