His brother wore the # 45 and Jordan thought that 23 was half of 45
Michael Jordan chose number 23.
The link below has a great blog post on why Jordan chose 23.
Yes, when Lebron James was a kid he admired the great Michael Jordan. Now he has changed his number to number 6 for respect of Michael Jordan's number. The NBA was going to say no one will ever be allowed to wear number 23 but they did not, but Lebron James still changed his number for respect to Michael Jordan.
He wanted to be 1 step above Michael Jordan
in 1984 Jordan was the 12th overall pick.
Michael Jordan was Selected by Chicago Bulls 1984 / Round: 1 / Pick: 3
Michael Jordan was drafted in the 1984 NBA Draft. He was selected with the 3rd pick, by the Chicago Bulls.
Michael Jordan's first pick was number 45, however that was already taken. His plan was to split it in half, which of course is 22.5, and from there he estimated to 23. He used this number all through high school and college. He then went on to use it in the NBA as well.
Michael Jordan entered the NBA in 1984, being the 3rd overall pick in the 1984 draft by the Chicago Bulls.
In the 1984 NBA draft, Michael Jordan was the third overall pick. He was selected by the Chicago Bulls out of University of North Carolina.