Answer
The number is $39000$.
Work Step by Step
Step 1: Firstly evaluate exponents in the number as follows:
$4\cdot20^3+17\cdot20^2+10\cdot20^1+0\cdot20^0$
$4\cdot8000+17\cdot400+10\cdot20+0$
Step 2: Now use Multiplication operation.
$32000+6800+200+0$
Step 3: Now add.
$39000$
So, the number is $39000$.