28321076831 has 8 divisors (see below), whose sum is σ = 28588828800. Its totient is φ = 28054579608.

The previous prime is 28321076807. The next prime is 28321076851. The reversal of 28321076831 is 13867012382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28321076831 is a prime.

It is a super-2 number, since 2×28321076831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321076851) 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 7 ways as a sum of consecutive naturals, for example, 268301 + ... + 358646.

It is an arithmetic number, because the mean of its divisors is an integer number (3573603600).

Almost surely, 2^28321076831 is an apocalyptic number.

28321076831 is a deficient number, since it is larger than the sum of its proper divisors (267751969).

28321076831 is a wasteful number, since it uses less digits than its factorization.

28321076831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627373.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 28321076831 in words is "twenty-eight billion, three hundred twenty-one million, seventy-six thousand, eight hundred thirty-one".