28317717441 has 12 divisors (see below), whose sum is σ = 44049782868. Its totient is φ = 17426287584.

The previous prime is 28317717427. The next prime is 28317717443. The reversal of 28317717441 is 14471771382.

28317717441 is a `hidden beast` number, since 28 + 3 + 177 + 17 + 441 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9081137025 + 19236580416 = 95295^2 + 138696^2 .

It is not a de Polignac number, because 28317717441 - 2¹⁰ = 28317716417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28317717443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121015770 + ... + 121016003.

It is an arithmetic number, because the mean of its divisors is an integer number (3670815239).

Almost surely, 2^28317717441 is an apocalyptic number.

It is an amenable number.

28317717441 is a deficient number, since it is larger than the sum of its proper divisors (15732065427).

28317717441 is a wasteful number, since it uses less digits than its factorization.

28317717441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242031792 (or 242031789 counting only the distinct ones).

The product of its digits is 263424, while the sum is 45.

The spelling of 28317717441 in words is "twenty-eight billion, three hundred seventeen million, seven hundred seventeen thousand, four hundred forty-one".