28056310369 has 2 divisors, whose sum is σ = 28056310370. Its totient is φ = 28056310368.

The previous prime is 28056310357. The next prime is 28056310397. The reversal of 28056310369 is 96301365082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20309670144 + 7746640225 = 142512^2 + 88015^2 .

It is a cyclic number.

It is not a de Polignac number, because 28056310369 - 2¹¹ = 28056308321 is a prime.

It is a super-2 number, since 2×28056310369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28056350369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14028155184 + 14028155185.

It is an arithmetic number, because the mean of its divisors is an integer number (14028155185).

Almost surely, 2^28056310369 is an apocalyptic number.

It is an amenable number.

28056310369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28056310369 is an equidigital number, since it uses as much as digits as its factorization.

28056310369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 28056310369 in words is "twenty-eight billion, fifty-six million, three hundred ten thousand, three hundred sixty-nine".