28683604 has 6 divisors (see below), whose sum is σ = 50196314. Its totient is φ = 14341800.

The previous prime is 28683601. The next prime is 28683659. The reversal of 28683604 is 40638682.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 1435204 = 5220^2 + 1198^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28683601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3585447 + ... + 3585454.

Almost surely, 2^28683604 is an apocalyptic number.

It is an amenable number.

28683604 is a deficient number, since it is larger than the sum of its proper divisors (21512710).

28683604 is a wasteful number, since it uses less digits than its factorization.

28683604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7170905 (or 7170903 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 28683604 is about 5355.7076096441. The cubic root of 28683604 is about 306.1102739525.

The spelling of 28683604 in words is "twenty-eight million, six hundred eighty-three thousand, six hundred four".