28028840084 has 12 divisors (see below), whose sum is σ = 56057680224. Its totient is φ = 12012360024.

The previous prime is 28028840069. The next prime is 28028840089. The reversal of 28028840084 is 48004882082.

28028840084 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28028840089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500514974 + ... + 500515029.

It is an arithmetic number, because the mean of its divisors is an integer number (4671473352).

Almost surely, 2^28028840084 is an apocalyptic number.

It is an amenable number.

28028840084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28028840084 is a wasteful number, since it uses less digits than its factorization.

28028840084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001030014 (or 1001030012 counting only the distinct ones).

The product of its (nonzero) digits is 262144, while the sum is 44.

The spelling of 28028840084 in words is "twenty-eight billion, twenty-eight million, eight hundred forty thousand, eighty-four".