In English we simple say number for quantity and for the physical number. What is the difference between nombro and numero?
Nombro = number, amount. Hence: nombri = (1) “to count,” (2) “to be at the quantity of.” Not to be confused with:
numero = (1) copy, edition (of a magazine); (2) number, digit, cipher. Hence: numeri = “to number, put numbers on.” (Some speakers use the still unusual term diĝito = “digit,” especially in technical contexts.)
numeralo = numeral.
numeratoro = numerator.
cifero = number, written sign for a number.