28894728548 has 12 divisors (see below), whose sum is σ = 57789457152. Its totient is φ = 12383455080.

The previous prime is 28894728539. The next prime is 28894728563. The reversal of 28894728548 is 84582749882.

28894728548 is an admirable 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, 515977268 + ... + 515977323.

It is an arithmetic number, because the mean of its divisors is an integer number (4815788096).

Almost surely, 2^28894728548 is an apocalyptic number.

28894728548 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28894728548 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.

28894728548 is a wasteful number, since it uses less digits than its factorization.

28894728548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031954602 (or 1031954600 counting only the distinct ones).

The product of its digits is 82575360, while the sum is 65.

The spelling of 28894728548 in words is "twenty-eight billion, eight hundred ninety-four million, seven hundred twenty-eight thousand, five hundred forty-eight".