28320
28320 is a five-digit integer. It is an even number, divisible by 2. Further decomposition reveals it is divisible by 4, 8, and 16. Its prime factorization is 2^5 * 885. The sum of its digits is 2 + 8 + 3 + 2 + 0, which equals 15. As 15 is divisible by 3, 28320 is also divisible by 3.
In base 10, 28320 falls between the integers 28319 and 28321. It is not a prime number