28321504717 has 8 divisors (see below), whose sum is σ = 30899005632. Its totient is φ = 25744473600.

The previous prime is 28321504711. The next prime is 28321504721. The reversal of 28321504717 is 71740512382.

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-28321504717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28321504717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28321504711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15117 + ... + 238477.

It is an arithmetic number, because the mean of its divisors is an integer number (3862375704).

Almost surely, 2^28321504717 is an apocalyptic number.

It is an amenable number.

28321504717 is a deficient number, since it is larger than the sum of its proper divisors (2577500915).

28321504717 is a wasteful number, since it uses less digits than its factorization.

28321504717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234899.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 28321504717 in words is "twenty-eight billion, three hundred twenty-one million, five hundred four thousand, seven hundred seventeen".