nude number
Harshad number
composite number
perfect power
friendly number
highly composite number
natural number
aliquot
aliquot part
untouchable number
least common multiple
lowest common denominator
root
even number
natural numbers
Pythagorean triple
radix
base
quadratic residue
noncototient
cube root
counting number
superior highly composite number
totative
aliquant
aliquant part
Pythagorean quadruple
double factorial
dozenal
harmonic series
unit function
round number
integerness
quadrillion
1000000000
one million million
trillion
billion
1000000000000
modular arithmetic
decimal digit
one thousand million
eigenvalue of a square matrix
duodecimal digit
eigenvalue of a matrix
eigenvalue
characteristic root of a square matrix
double digit
repeater
common multiple