28534523 has 6 divisors (see below), whose sum is σ = 30115764. Its totient is φ = 27032364.

The previous prime is 28534507. The next prime is 28534549. The reversal of 28534523 is 32543582.

It is not a de Polignac number, because 28534523 - 2⁴ = 28534507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28534523.

It is not an unprimeable number, because it can be changed into a prime (28534573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39161 + ... + 39882.

It is an arithmetic number, because the mean of its divisors is an integer number (5019294).

Almost surely, 2^28534523 is an apocalyptic number.

28534523 is a deficient number, since it is larger than the sum of its proper divisors (1581241).

28534523 is an equidigital number, since it uses as much as digits as its factorization.

28534523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79081 (or 79062 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 28534523 is about 5341.7715226318. The cubic root of 28534523 is about 305.5790236863.

The spelling of 28534523 in words is "twenty-eight million, five hundred thirty-four thousand, five hundred twenty-three".