28978543528 has 16 divisors (see below), whose sum is σ = 59274293760. Its totient is φ = 13172065200.

The previous prime is 28978543513. The next prime is 28978543589. The reversal of 28978543528 is 82534587982.

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, 164650728 + ... + 164650903.

It is an arithmetic number, because the mean of its divisors is an integer number (3704643360).

Almost surely, 2^28978543528 is an apocalyptic number.

It is an amenable number.

28978543528 is an abundant number, since it is smaller than the sum of its proper divisors (30295750232).

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

28978543528 is a wasteful number, since it uses less digits than its factorization.

28978543528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329301648 (or 329301644 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 61.

The spelling of 28978543528 in words is "twenty-eight billion, nine hundred seventy-eight million, five hundred forty-three thousand, five hundred twenty-eight".