28364716338 has 128 divisors (see below), whose sum is σ = 68018227200. Its totient is φ = 7878024000.

The previous prime is 28364716327. The next prime is 28364716363. The reversal of 28364716338 is 83361746382.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22211356 + ... + 22212632.

It is an arithmetic number, because the mean of its divisors is an integer number (531392400).

Almost surely, 2^28364716338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28364716338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34009113600).

28364716338 is an abundant number, since it is smaller than the sum of its proper divisors (39653510862).

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

28364716338 is a wasteful number, since it uses less digits than its factorization.

28364716338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1583 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 51.

It can be divided in two parts, 2836 and 4716338, that added together give a palindrome (4719174).

The spelling of 28364716338 in words is "twenty-eight billion, three hundred sixty-four million, seven hundred sixteen thousand, three hundred thirty-eight".