28804805424 has 60 divisors (see below), whose sum is σ = 81193457800. Its totient is φ = 9532518912.

The previous prime is 28804805399. The next prime is 28804805443. The reversal of 28804805424 is 42450840882.

28804805424 is a `hidden beast` number, since 28 + 8 + 0 + 4 + 80 + 542 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28804805424.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 699529 + ... + 739560.

Almost surely, 2^28804805424 is an apocalyptic number.

28804805424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28804805424 is an abundant number, since it is smaller than the sum of its proper divisors (52388652376).

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

28804805424 is a wasteful number, since it uses less digits than its factorization.

28804805424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439242 (or 1439233 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 45.

The spelling of 28804805424 in words is "twenty-eight billion, eight hundred four million, eight hundred five thousand, four hundred twenty-four".