Write the following number in standard notation. \[ 2.90 \times 10^{7} \] $2.90 \times 10^{7}=\square($ Type an integer or a decimal. $)$

Step 1 ：The question is asking to convert a number from scientific notation to standard notation. In scientific notation, the number \(a \times 10^{b}\) represents the number \(a\) moved \(b\) places to the right if \(b\) is positive, and \(b\) places to the left if \(b\) is negative. In this case, we have \(2.90 \times 10^{7}\), so we need to move the decimal point in \(2.90\) seven places to the right.

Step 2 ：The standard notation of \(2.90 \times 10^{7}\) is \(\boxed{29000000}\).