28317748782 has 8 divisors (see below), whose sum is σ = 56635497576. Its totient is φ = 9439249592.

The previous prime is 28317748769. The next prime is 28317748783. The reversal of 28317748782 is 28784771382.

It is a sphenic number, since it is the product of 3 distinct primes.

28317748782 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28317748783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2359812393 + ... + 2359812404.

It is an arithmetic number, because the mean of its divisors is an integer number (7079437197).

Almost surely, 2^28317748782 is an apocalyptic number.

28317748782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28317748782 is a wasteful number, since it uses less digits than its factorization.

28317748782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719624802.

The product of its digits is 8429568, while the sum is 57.

The spelling of 28317748782 in words is "twenty-eight billion, three hundred seventeen million, seven hundred forty-eight thousand, seven hundred eighty-two".