28395769 has 2 divisors, whose sum is σ = 28395770. Its totient is φ = 28395768.

The previous prime is 28395751. The next prime is 28395791. The reversal of 28395769 is 96759382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24880144 + 3515625 = 4988^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 28395769 - 2¹¹ = 28393721 is a prime.

It is a super-2 number, since 2×28395769² = 1612639394202722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28395749) 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, 14197884 + 14197885.

It is an arithmetic number, because the mean of its divisors is an integer number (14197885).

Almost surely, 2^28395769 is an apocalyptic number.

It is an amenable number.

28395769 is a deficient number, since it is larger than the sum of its proper divisors (1).

28395769 is an equidigital number, since it uses as much as digits as its factorization.

28395769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 49.

The square root of 28395769 is about 5328.7680565024. The cubic root of 28395769 is about 305.0829085725.

The spelling of 28395769 in words is "twenty-eight million, three hundred ninety-five thousand, seven hundred sixty-nine".