28259678322 has 18 divisors (see below), whose sum is σ = 61230848367. Its totient is φ = 9419655036.

The previous prime is 28259678299. The next prime is 28259678347. The reversal of 28259678322 is 22387695282.

28259678322 is a `hidden beast` number, since 2 + 8 + 259 + 67 + 8 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14129839161 + 14129839161 = 118869^2 + 118869^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=118869.

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 8 ways as a sum of consecutive naturals, for example, 693403 + ... + 733025.

Almost surely, 2^28259678322 is an apocalyptic number.

28259678322 is an abundant number, since it is smaller than the sum of its proper divisors (32971170045).

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

28259678322 is an frugal number, since it uses more digits than its factorization.

28259678322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79254 (or 39628 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 28259678322 in words is "twenty-eight billion, two hundred fifty-nine million, six hundred seventy-eight thousand, three hundred twenty-two".