28112287064 has 32 divisors (see below), whose sum is σ = 55547596800. Its totient is φ = 13301269920.

The previous prime is 28112287051. The next prime is 28112287087. The reversal of 28112287064 is 46078221182.

It is a congruent number.

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, 30569 + ... + 239079.

It is an arithmetic number, because the mean of its divisors is an integer number (1735862400).

Almost surely, 2^28112287064 is an apocalyptic number.

It is an amenable number.

28112287064 is a deficient number, since it is larger than the sum of its proper divisors (27435309736).

28112287064 is a wasteful number, since it uses less digits than its factorization.

28112287064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209423 (or 209419 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The spelling of 28112287064 in words is "twenty-eight billion, one hundred twelve million, two hundred eighty-seven thousand, sixty-four".