28321786842 has 8 divisors (see below), whose sum is σ = 56643573696. Its totient is φ = 9440595612.

The previous prime is 28321786841. The next prime is 28321786853. The reversal of 28321786842 is 24868712382.

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

28321786842 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28321786841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360148898 + ... + 2360148909.

It is an arithmetic number, because the mean of its divisors is an integer number (7080446712).

Almost surely, 2^28321786842 is an apocalyptic number.

28321786842 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.

28321786842 is a wasteful number, since it uses less digits than its factorization.

28321786842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720297812.

The product of its digits is 2064384, while the sum is 51.

The spelling of 28321786842 in words is "twenty-eight billion, three hundred twenty-one million, seven hundred eighty-six thousand, eight hundred forty-two".