28327582864 has 45 divisors (see below), whose sum is σ = 63856081011. Its totient is φ = 12138372960.

The previous prime is 28327582849. The next prime is 28327582867. The reversal of 28327582864 is 46828572382.

The square root of 28327582864 is 168308.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28327582867) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4709619 + ... + 4715629.

Almost surely, 2^28327582864 is an apocalyptic number.

28327582864 is the 168308-th square number.

It is an amenable number.

28327582864 is an abundant number, since it is smaller than the sum of its proper divisors (35528498147).

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

28327582864 is an frugal number, since it uses more digits than its factorization.

28327582864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044 (or 6020 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 55.

The spelling of 28327582864 in words is "twenty-eight billion, three hundred twenty-seven million, five hundred eighty-two thousand, eight hundred sixty-four".