Four of them: 1, 8, 27 & 64. Including negative numbers which are all less than 125, there are infinitely many as they also include: -1, -8, -27, -64, -125, -216, ...
There are 899 numbers that are less than 900
999,999,999 numbers less than 1,000,000,000.
Anything less than that of 1 cubic meter? Many things...
Many numbers are less than 3.25. Less means that the numbers are smaller.
There are 48 prime numbers less than 220.
There are 27 prime numbers less than 102.
There are 15 prime numbers less than 50
They are 239 prime numbers less than 1500.
There are 25 prime numbers less than 100
An infinite number of even numbers are less than 10.
There are 1229 prime numbers that are less than 10000.