28604032 has 16 divisors (see below), whose sum is σ = 56984850. Its totient is φ = 14301952.

The previous prime is 28604011. The next prime is 28604033. The reversal of 28604032 is 23040682.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26460736 + 2143296 = 5144^2 + 1464^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 28603988 and 28604006.

It is not an unprimeable number, because it can be changed into a prime (28604033) 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 as a sum of consecutive naturals, namely, 111607 + ... + 111862.

Almost surely, 2^28604032 is an apocalyptic number.

It is an amenable number.

28604032 is a deficient number, since it is larger than the sum of its proper divisors (28380818).

28604032 is an equidigital number, since it uses as much as digits as its factorization.

28604032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223483 (or 223471 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 28604032 is about 5348.2737401894. The cubic root of 28604032 is about 305.8269487308.

The spelling of 28604032 in words is "twenty-eight million, six hundred four thousand, thirty-two".