28553532828 has 12 divisors (see below), whose sum is σ = 66624909960. Its totient is φ = 9517844272.

The previous prime is 28553532817. The next prime is 28553532863. The reversal of 28553532828 is 82823535582.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189730523 + ... + 1189730546.

It is an arithmetic number, because the mean of its divisors is an integer number (5552075830).

Almost surely, 2^28553532828 is an apocalyptic number.

It is an amenable number.

28553532828 is an abundant number, since it is smaller than the sum of its proper divisors (38071377132).

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

28553532828 is a wasteful number, since it uses less digits than its factorization.

28553532828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379461076 (or 2379461074 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 51.

The spelling of 28553532828 in words is "twenty-eight billion, five hundred fifty-three million, five hundred thirty-two thousand, eight hundred twenty-eight".