28320775476 has 96 divisors (see below), whose sum is σ = 75905077248. Its totient is φ = 8050734720.

The previous prime is 28320775453. The next prime is 28320775519. The reversal of 28320775476 is 67457702382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17889781 + ... + 17891363.

It is an arithmetic number, because the mean of its divisors is an integer number (790677888).

Almost surely, 2^28320775476 is an apocalyptic number.

It is an amenable number.

28320775476 is an abundant number, since it is smaller than the sum of its proper divisors (47584301772).

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

28320775476 is a wasteful number, since it uses less digits than its factorization.

28320775476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 28320775476 in words is "twenty-eight billion, three hundred twenty million, seven hundred seventy-five thousand, four hundred seventy-six".