28320788522 has 16 divisors (see below), whose sum is σ = 45771936000. Its totient is φ = 13064570352.

The previous prime is 28320788521. The next prime is 28320788533. The reversal of 28320788522 is 22588702382.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28320788521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220478 + ... + 324425.

It is an arithmetic number, because the mean of its divisors is an integer number (2860746000).

Almost surely, 2^28320788522 is an apocalyptic number.

28320788522 is a deficient number, since it is larger than the sum of its proper divisors (17451147478).

28320788522 is a wasteful number, since it uses less digits than its factorization.

28320788522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546917.

The product of its (nonzero) digits is 860160, while the sum is 47.

The spelling of 28320788522 in words is "twenty-eight billion, three hundred twenty million, seven hundred eighty-eight thousand, five hundred twenty-two".