28452346866 has 24 divisors (see below), whose sum is σ = 61718718204. Its totient is φ = 9473043840.

The previous prime is 28452346847. The next prime is 28452346883. The reversal of 28452346866 is 66864325482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22271085225 + 6181261641 = 149235^2 + 78621^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 906795 + ... + 937646.

Almost surely, 2^28452346866 is an apocalyptic number.

28452346866 is an abundant number, since it is smaller than the sum of its proper divisors (33266371338).

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

28452346866 is a wasteful number, since it uses less digits than its factorization.

28452346866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845306 (or 1845303 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 54.

The spelling of 28452346866 in words is "twenty-eight billion, four hundred fifty-two million, three hundred forty-six thousand, eight hundred sixty-six".