28529169 has 4 divisors (see below), whose sum is σ = 38038896. Its totient is φ = 19019444.

The previous prime is 28529161. The next prime is 28529197. The reversal of 28529169 is 96192582.

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 28529169 - 2³ = 28529161 is a prime.

It is a super-2 number, since 2×28529169² = 1627826967661122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28529169.

It is not an unprimeable number, because it can be changed into a prime (28529161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4754859 + ... + 4754864.

It is an arithmetic number, because the mean of its divisors is an integer number (9509724).

Almost surely, 2^28529169 is an apocalyptic number.

It is an amenable number.

28529169 is a deficient number, since it is larger than the sum of its proper divisors (9509727).

28529169 is an equidigital number, since it uses as much as digits as its factorization.

28529169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9509726.

The product of its digits is 77760, while the sum is 42.

The square root of 28529169 is about 5341.2703545131. The cubic root of 28529169 is about 305.5599103193.

It can be divided in two parts, 2852 and 9169, that added together give a palindrome (12021).

The spelling of 28529169 in words is "twenty-eight million, five hundred twenty-nine thousand, one hundred sixty-nine".