28789454808 has 40 divisors (see below), whose sum is σ = 80637132180. Its totient is φ = 9596484720.

The previous prime is 28789454803. The next prime is 28789454891. The reversal of 28789454808 is 80845498782.

28789454808 is a `hidden beast` number, since 2 + 8 + 7 + 89 + 4 + 548 + 0 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28789454803) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22213438 + ... + 22214733.

Almost surely, 2^28789454808 is an apocalyptic number.

It is an amenable number.

28789454808 is an abundant number, since it is smaller than the sum of its proper divisors (51847677372).

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

28789454808 is a wasteful number, since it uses less digits than its factorization.

28789454808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44428189 (or 44428176 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 28789454808 in words is "twenty-eight billion, seven hundred eighty-nine million, four hundred fifty-four thousand, eight hundred eight".