composite number
positive integer that has at least one positive divisor other than 1 or itself
Smith number
type of composite integer
perfect power
positive integer that is an integer power of another positive integer
perfect number
positive integer which equals the sum of all its divisors
highly composite number
positive integer with more divisors than any smaller positive integer has
Jevons' number
natural number
products of four distinct primes
possible results of multiplying four distinct prime numbers
sublime number
numbers with a perfect number of factors and a perfect sum of factors