Why do I keep seeing the same number on phones, microwaves, stoves, and clocks?

You are looking because the number, and thus it appears.
I show the numbers 23 and 19 everywhere, passing over before long again I'm a fan connected with both Jim Carey also Stephen King...
And I am also 23.
This really has no bearing on anything. mayhap you can bellow 38 your lucky number.