Step 1: Since 20612439 do not have a decimal point, we will add one at the end of the number 20612439.
20612439.
Step 2: Move the decimal point from its current position (the black dot) to a position immediately to the right of the first nonzero digit (the red dot).
2.0612439.
Step 3: We moved the decimal point 7 spaces to the right. Therefore, the exponent on base 10 will be positive 7.Now we know that the:
Mantissa = 2.0612439
Exponent = 7
So, the solution is:
$$20612439 = \color{blue}{ 2.0612439} \cdot 10^{ \color{red}{ 7 }}$$