28177448832 has 128 divisors (see below), whose sum is σ = 89559876000. Its totient is φ = 8669970432.

The previous prime is 28177448821. The next prime is 28177448909. The reversal of 28177448832 is 23884477182.

28177448832 is a `hidden beast` number, since 28 + 177 + 448 + 8 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268657 + ... + 358512.

Almost surely, 2^28177448832 is an apocalyptic number.

It is an amenable number.

28177448832 is an abundant number, since it is smaller than the sum of its proper divisors (61382427168).

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

28177448832 is a wasteful number, since it uses less digits than its factorization.

28177448832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627205 (or 627187 counting only the distinct ones).

The product of its digits is 4816896, while the sum is 54.

The spelling of 28177448832 in words is "twenty-eight billion, one hundred seventy-seven million, four hundred forty-eight thousand, eight hundred thirty-two".