19204 has 6 divisors (see below), whose sum is σ = 33614. Its totient is φ = 9600.

The previous prime is 19183. The next prime is 19207. The reversal of 19204 is 40291.

It can be written as a sum of positive squares in only one way, i.e., 16900 + 2304 = 130^2 + 48^2 .

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (19207) by changing a digit.

19204 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2397 + ... + 2404.

2¹⁹²⁰⁴ is an apocalyptic number.

It is an amenable number.

19204 is a deficient number, since it is larger than the sum of its proper divisors (14410).

19204 is a wasteful number, since it uses less digits than its factorization.

19204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4805 (or 4803 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 19204 is about 138.5784976106. The cubic root of 19204 is about 26.7791774101.

Adding to 19204 its reverse (40291), we get a palindrome (59495).

The spelling of 19204 in words is "nineteen thousand, two hundred four".