28369169 has 2 divisors, whose sum is σ = 28369170. Its totient is φ = 28369168.

The previous prime is 28369157. The next prime is 28369181. The reversal of 28369169 is 96196382.

It is a balanced prime because it is at equal distance from previous prime (28369157) and next prime (28369181).

It can be written as a sum of positive squares in only one way, i.e., 25603600 + 2765569 = 5060^2 + 1663^2 .

It is a cyclic number.

It is not a de Polignac number, because 28369169 - 2²⁴ = 11591953 is a prime.

It is a super-2 number, since 2×28369169² = 1609619499501122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28369069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14184584 + 14184585.

It is an arithmetic number, because the mean of its divisors is an integer number (14184585).

Almost surely, 2^28369169 is an apocalyptic number.

It is an amenable number.

28369169 is a deficient number, since it is larger than the sum of its proper divisors (1).

28369169 is an equidigital number, since it uses as much as digits as its factorization.

28369169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 28369169 is about 5326.2715852649. The cubic root of 28369169 is about 304.9876157293.

The spelling of 28369169 in words is "twenty-eight million, three hundred sixty-nine thousand, one hundred sixty-nine".