28857460369 has 2 divisors, whose sum is σ = 28857460370. Its totient is φ = 28857460368.

The previous prime is 28857460223. The next prime is 28857460391. The reversal of 28857460369 is 96306475882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28044526225 + 812934144 = 167465^2 + 28512^2 .

It is a cyclic number.

It is not a de Polignac number, because 28857460369 - 2¹¹ = 28857458321 is a prime.

It is a super-2 number, since 2×28857460369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28857460069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14428730184 + 14428730185.

It is an arithmetic number, because the mean of its divisors is an integer number (14428730185).

Almost surely, 2^28857460369 is an apocalyptic number.

It is an amenable number.

28857460369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28857460369 is an equidigital number, since it uses as much as digits as its factorization.

28857460369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 28857460369 in words is "twenty-eight billion, eight hundred fifty-seven million, four hundred sixty thousand, three hundred sixty-nine".