28603604 has 18 divisors (see below), whose sum is σ = 50628942. Its totient is φ = 14140000.

The previous prime is 28603591. The next prime is 28603633. The reversal of 28603604 is 40630682.

It can be written as a sum of positive squares in 3 ways, for example, as 24482704 + 4120900 = 4948^2 + 2030^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 40454 + ... + 41154.

It is an arithmetic number, because the mean of its divisors is an integer number (2812719).

Almost surely, 2^28603604 is an apocalyptic number.

It is an amenable number.

28603604 is a deficient number, since it is larger than the sum of its proper divisors (22025338).

28603604 is a wasteful number, since it uses less digits than its factorization.

28603604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 28603604 is about 5348.2337271290. The cubic root of 28603604 is about 305.8254233679.

The spelling of 28603604 in words is "twenty-eight million, six hundred three thousand, six hundred four".