28856472928 has 24 divisors (see below), whose sum is σ = 60153016392. Its totient is φ = 13579516416.

The previous prime is 28856472907. The next prime is 28856472947. The reversal of 28856472928 is 82927465882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26521950 + ... + 26523037.

It is an arithmetic number, because the mean of its divisors is an integer number (2506375683).

Almost surely, 2^28856472928 is an apocalyptic number.

It is an amenable number.

28856472928 is an abundant number, since it is smaller than the sum of its proper divisors (31296543464).

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

28856472928 is a wasteful number, since it uses less digits than its factorization.

28856472928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53045014 (or 53045006 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 61.

The spelling of 28856472928 in words is "twenty-eight billion, eight hundred fifty-six million, four hundred seventy-two thousand, nine hundred twenty-eight".