28532810128 has 10 divisors (see below), whose sum is σ = 55282319654. Its totient is φ = 14266405056.

The previous prime is 28532810113. The next prime is 28532810153. The reversal of 28532810128 is 82101823582.

It can be written as a sum of positive squares in only one way, i.e., 27095793664 + 1437016464 = 164608^2 + 37908^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891650301 + ... + 891650332.

Almost surely, 2^28532810128 is an apocalyptic number.

It is an amenable number.

28532810128 is a deficient number, since it is larger than the sum of its proper divisors (26749509526).

28532810128 is a wasteful number, since it uses less digits than its factorization.

28532810128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783300641 (or 1783300635 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 28532810128 in words is "twenty-eight billion, five hundred thirty-two million, eight hundred ten thousand, one hundred twenty-eight".