19400

19400 is a number that falls between 19399 and 19401. It is an even number, divisible by 2, and can be expressed as 194 x 100. In the decimal system, it is written as "nineteen thousand four hundred." In Roman numerals, it is represented as XIXCD. The number 19400 is significant in various contexts, including mathematics, science, and culture.

In mathematics, 19400 is a composite number, meaning it has factors other than 1 and itself. Its prime factorization is 2^3 x 5^2 x 194. This number is also a perfect square, as it can be expressed as 139^2.

In science, 19400 has been used in various studies and experiments. For example, it is the atomic number of plutonium, a radioactive element used in nuclear weapons and power plants. It is also the approximate number of species of insects on Earth.

In culture, 19400 has appeared in various works of art and literature. For instance, it is the number of stars in the Milky Way galaxy, as estimated by astronomers. It is also the number of verses in the Hindu epic Mahabharata.

Overall, 19400 is a number with a rich history and significance in various fields. Its unique properties and appearances in different contexts make it an interesting subject of study.