A transistor is connected in common emitter circuit configuration, the collector supply voltage is $10 \mathrm{V}$ and the voltage drop across a resistor of $1000 \mathrm{\Omega }$ in the collector circuit is $0.6 \mathrm{V}.$ If the current gain factor $\left(\beta \right)$ is $24,$ then the base current is ____$\mathrm{\mu A}$. (Round off to the Nearest Integer)