21900

21900 is a four-digit number. In base 10, it is composed of the digits 2, 1, 9, 0, and 0. The number represents twenty-one thousand, nine hundred.

As a natural number, 21900 is preceded by 21899 and followed by 21901. It is an even number, divisible by 2. Its prime factorization is 2^2 * 3 * 5^2 * 73. This means it is composed of the prime factors 2, 3, 5, and 73.

In Roman numerals, 21900 would be represented as XXI CM. This is formed by combining X (10) for twenty thousand, I (1) for one thousand, and CM (900) for nine hundred.

The number 21900 does not hold significant mathematical properties such as being a perfect square, a prime number, or a Fibonacci number. Its properties are primarily derived from its divisibility and its prime factors. It is a composite number.

The significance of the number 21900 is often contextual. It might represent a quantity, a measurement, a year in a hypothetical future, or an identifier in a specific system. Without further context, its meaning remains purely numerical.