28364169 has 32 divisors (see below), whose sum is σ = 41731200. Its totient is φ = 17072640.

The previous prime is 28364153. The next prime is 28364173. The reversal of 28364169 is 96146382.

It is not a de Polignac number, because 28364169 - 2⁴ = 28364153 is a prime.

It is a super-2 number, since 2×28364169² = 1609052166121122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28369169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123747 + ... + 123975.

It is an arithmetic number, because the mean of its divisors is an integer number (1304100).

Almost surely, 2^28364169 is an apocalyptic number.

It is an amenable number.

28364169 is a deficient number, since it is larger than the sum of its proper divisors (13367031).

28364169 is a wasteful number, since it uses less digits than its factorization.

28364169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 62208, while the sum is 39.

The square root of 28364169 is about 5325.8021930973. The cubic root of 28364169 is about 304.9696968908.

The spelling of 28364169 in words is "twenty-eight million, three hundred sixty-four thousand, one hundred sixty-nine".