atomic
atomic number

bonus
bonus number

callback
callback number display

capillary
capillary number

chassis
chassis number

decimal
decimal number

dial
to dial a number

estimated
an estimated number of...

fax
fax number

finite
finite number

fractional
fractional number

goodly
a goodly number

IBAN
international bank account number

imaginary
imaginary number

infinite
infinite number

integral
integral number

irrational
irrational number

ISBN
International Standard Book Number

ISSN
International Standard Serial Number

multiplication
multiplication of a number by another

no.
number

number
even number

number off
numerar

ordinal
ordinal number

PIN
personal identification number

surd
surd number

tel.
telephone number

ten
number ten

toll-free
toll-free number

transfinite
transfinite number