18712

18712 is a five-digit number that falls within the range of 18000 to 19000. It is an even number, as it ends in a 2, and it is divisible by 2. In base 10, it is represented as 18712, but in other numeral systems, it has different representations. For example, in binary, it is 10010010110000, and in hexadecimal, it is 4930. The number 18712 is also a composite number, meaning it has factors other than 1 and itself. Its prime factorization is 2^2 * 3 * 17 * 59. In terms of its divisors, 18712 has 16 positive divisors and 15 negative divisors, making a total of 31 divisors. The sum of its divisors is 41472, and its proper divisors sum up to 22760. The number 18712 is not a perfect number, as the sum of its proper divisors is not equal to the number itself. It is also not a prime number, as it has more than two factors.