int insert into np.array float array becomes a float with bunch of 0s with e^02

Question

I have the following (1, 64) np.array:

tmp = [2.0526170e-03 1.2926349e-03 1.6969059e-03 3.3049309e-04 6.6263149e-03
 2.9519806e-03 2.0714400e-03 5.4122265e-03 2.7