28338882317 has 2 divisors, whose sum is σ = 28338882318. Its totient is φ = 28338882316.

The previous prime is 28338882307. The next prime is 28338882323. The reversal of 28338882317 is 71328883382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26677015561 + 1661866756 = 163331^2 + 40766^2 .

It is a cyclic number.

It is not a de Polignac number, because 28338882317 - 2¹² = 28338878221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28338882307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14169441158 + 14169441159.

It is an arithmetic number, because the mean of its divisors is an integer number (14169441159).

Almost surely, 2^28338882317 is an apocalyptic number.

It is an amenable number.

28338882317 is a deficient number, since it is larger than the sum of its proper divisors (1).

28338882317 is an equidigital number, since it uses as much as digits as its factorization.

28338882317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3096576, while the sum is 53.

The spelling of 28338882317 in words is "twenty-eight billion, three hundred thirty-eight million, eight hundred eighty-two thousand, three hundred seventeen".