[Python] How to control scientific notation in matplotlib?

This is my data frame I'm trying to plot:

my_dic = {'stats': {'apr': 23083904, 'may': 16786816, 'june': 26197936}}
my_df = pd.DataFrame(my_dic)


This is how I plot it:

ax = my_df['stats'].plot(kind='bar', legend=False)
ax.set_xlabel("Month", fontsize=12)
ax.set_ylabel("Stats", fontsize=12)
ax.ticklabel_format(useOffset=False) #AttributeError: This method only works with the ScalarFormatter.
plt.show()


The plot:



I'd like to control the scientific notation. I tried to suppress it by this line as was suggested in other questions plt.ticklabel_format(useOffset=False) but I get this error back -

AttributeError: This method only works with the ScalarFormatter


Ideally, I'd like to show my data in (mln).

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