$\left[\begin{array}{l}\text { Evenness and Oddness }\end{array}\right]$

Several consecutive natural numbers are written on the board. Exactly 52\% of them are even. How many even numbers are written on the board?
Since the recorded natural numbers are consecutive, even and odd numbers alternate. According to the condition, there are more even numbers, which means the recorded sequence starts and ends with even numbers.

There is one more even number, meaning one number constitutes (52 - 48)% of their total quantity.

Therefore, the number of even numbers is $52:(52-48)=13$.

## Answer

13.