28008612732 has 72 divisors (see below), whose sum is σ = 66545907456. Its totient is φ = 9168822432.

The previous prime is 28008612719. The next prime is 28008612739. The reversal of 28008612732 is 23721680082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008612739) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24940323 + ... + 24941445.

Almost surely, 2^28008612732 is an apocalyptic number.

It is an amenable number.

28008612732 is an abundant number, since it is smaller than the sum of its proper divisors (38537294724).

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

28008612732 is a wasteful number, since it uses less digits than its factorization.

28008612732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727 (or 1658 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28008612732 in words is "twenty-eight billion, eight million, six hundred twelve thousand, seven hundred thirty-two".