28604 has 6 divisors (see below), whose sum is σ = 50064.
Its totient is φ = 14300.
The previous prime is 28603. The next prime is 28607. The reversal of 28604 is 40682.
28604 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.
It is a plaindrome in base 12.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28603) 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, 3572 + ... + 3579.
It is an arithmetic number, because the mean of its divisors is an integer number (8344).
228604 is an apocalyptic number.
It is an amenable number.
28604 is a deficient number, since it is larger than the sum of its proper divisors (21460).
28604 is a wasteful number, since it uses less digits than its factorization.
28604 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7155 (or 7153 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 20.
The square root of 28604 is about 169.1271710873.
The cubic root of 28604 is about 30.5826834686.
The spelling of 28604 in words is "twenty-eight thousand, six hundred four".