28876538688 has 56 divisors (see below), whose sum is σ = 78867121920. Its totient is φ = 9315010560.

The previous prime is 28876538687. The next prime is 28876538693. The reversal of 28876538688 is 88683567882.

It is a super-2 number, since 2×28876538688² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28876538687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419833 + ... + 2431736.

Almost surely, 2^28876538688 is an apocalyptic number.

It is an amenable number.

28876538688 is an abundant number, since it is smaller than the sum of its proper divisors (49990583232).

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

28876538688 is a wasteful number, since it uses less digits than its factorization.

28876538688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4851615 (or 4851605 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 69.

The spelling of 28876538688 in words is "twenty-eight billion, eight hundred seventy-six million, five hundred thirty-eight thousand, six hundred eighty-eight".