28318368717 has 32 divisors (see below), whose sum is σ = 43434720000. Its totient is φ = 18213249600.

The previous prime is 28318368703. The next prime is 28318368719. The reversal of 28318368717 is 71786381382.

It is not a de Polignac number, because 28318368717 - 2²⁴ = 28301591501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318368719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1004784 + ... + 1032582.

It is an arithmetic number, because the mean of its divisors is an integer number (1357335000).

Almost surely, 2^28318368717 is an apocalyptic number.

28318368717 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28318368717 is a deficient number, since it is larger than the sum of its proper divisors (15116351283).

28318368717 is a wasteful number, since it uses less digits than its factorization.

28318368717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29138 (or 29132 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The spelling of 28318368717 in words is "twenty-eight billion, three hundred eighteen million, three hundred sixty-eight thousand, seven hundred seventeen".