Riddles, brain puzzles and mathematical problems

[BAndrew]

Ah, I see. Essentially, it's the same as mine, but less specific and more broad, right?

Exactly same idea, but more generalized.

Oh - I guess there's that, too. Lol. But, actually, what I wanted to say is that I'm a girl. Not a snide grammar Nazi.

Ooops sorry. I don't even look at the gender most times and my biases made me assume that you are a male.

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This is a tough one. It took me 1 hour to solve, but it is amazing! (you know when you solve it)

Find a natural number n>0 with the following property:
If we take the first degit and make it last (while keeping the other digits as they are) the number m we just made is the half of the first number n (or n = 2m).

For example if n = 2745 then m = 7452 but n=/= 2m. Therefore n is not the number we want.



NOTE: There are many such numbers n. All I ask is to give me one possible number n that satisfies the conditions.
NOTE2: Maths are not necessary to solve the problem(maybe a few basics only). If you know Maths then this will help you and there is a mathematical solution. But I guarantee that you don't have to know anything special.