28674169 has 4 divisors (see below), whose sum is σ = 29920896. Its totient is φ = 27427444.

The previous prime is 28674161. The next prime is 28674179. The reversal of 28674169 is 96147682.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28674169 - 2³ = 28674161 is a prime.

It is a super-2 number, since 2×28674169² = 1644415935681122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28674161) 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 in 3 ways as a sum of consecutive naturals, for example, 623329 + ... + 623374.

It is an arithmetic number, because the mean of its divisors is an integer number (7480224).

Almost surely, 2^28674169 is an apocalyptic number.

It is an amenable number.

28674169 is a deficient number, since it is larger than the sum of its proper divisors (1246727).

28674169 is a wasteful number, since it uses less digits than its factorization.

28674169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246726.

The product of its digits is 145152, while the sum is 43.

The square root of 28674169 is about 5354.8267012108. The cubic root of 28674169 is about 306.0767069577.

The spelling of 28674169 in words is "twenty-eight million, six hundred seventy-four thousand, one hundred sixty-nine".