28508494554 has 24 divisors (see below), whose sum is σ = 62512605792. Its totient is φ = 9388339080.

The previous prime is 28508494517. The next prime is 28508494583. The reversal of 28508494554 is 45549480582.

28508494554 is a `hidden beast` number, since 2 + 8 + 5 + 0 + 84 + 9 + 4 + 554 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28508494554.

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 11 ways as a sum of consecutive naturals, for example, 9539502 + ... + 9542489.

It is an arithmetic number, because the mean of its divisors is an integer number (2604691908).

Almost surely, 2^28508494554 is an apocalyptic number.

28508494554 is an abundant number, since it is smaller than the sum of its proper divisors (34004111238).

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

28508494554 is a wasteful number, since it uses less digits than its factorization.

28508494554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19082082 (or 19082079 counting only the distinct ones).

The product of its (nonzero) digits is 9216000, while the sum is 54.

The spelling of 28508494554 in words is "twenty-eight billion, five hundred eight million, four hundred ninety-four thousand, five hundred fifty-four".