28360476317 has 4 divisors (see below), whose sum is σ = 28395533340. Its totient is φ = 28325419296.

The previous prime is 28360476281. The next prime is 28360476337. The reversal of 28360476317 is 71367406382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27155414521 + 1205061796 = 164789^2 + 34714^2 .

It is a cyclic number.

It is not a de Polignac number, because 28360476317 - 2¹⁰ = 28360475293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28360476337) 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, 17527298 + ... + 17528915.

It is an arithmetic number, because the mean of its divisors is an integer number (7098883335).

Almost surely, 2^28360476317 is an apocalyptic number.

It is an amenable number.

28360476317 is a deficient number, since it is larger than the sum of its proper divisors (35057023).

28360476317 is an equidigital number, since it uses as much as digits as its factorization.

28360476317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35057022.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 28360476317 in words is "twenty-eight billion, three hundred sixty million, four hundred seventy-six thousand, three hundred seventeen".