Numbers

filesizeformat: This filter formats a numeric value as KB, MB etc. This filter can be used to display a number of bytes in a human readable format of kilo- or megabytes.
format_duration: See also
format_integer: See also
format_number: See also
format_price: See also
is_even: Test if an integer value is even:
is_number: Test if a value is a number (integer or floating point):
max: See also
min: See also
minmax: See also
rand: See also
round: Round a floating point value to the nearest integer.
round_significant: Round a number value to a number of significant digits. The significance defaults to two digits.
to_integer: See also