28112787588 has 24 divisors (see below), whose sum is σ = 65638091680. Its totient is φ = 9364988160.

The previous prime is 28112787557. The next prime is 28112787607. The reversal of 28112787588 is 88578721182.

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, 722893 + ... + 760788.

Almost surely, 2^28112787588 is an apocalyptic number.

It is an amenable number.

28112787588 is an abundant number, since it is smaller than the sum of its proper divisors (37525304092).

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

28112787588 is a wasteful number, since it uses less digits than its factorization.

28112787588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485267 (or 1485265 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 57.

The spelling of 28112787588 in words is "twenty-eight billion, one hundred twelve million, seven hundred eighty-seven thousand, five hundred eighty-eight".