15980 is an undulating number in base 13.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 15980.
It is an unprimeable number.
215980 is an apocalyptic number.
15980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 15980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15980 is a wasteful number, since it uses less digits than its factorization.
15980 is an odious number, because the sum of its binary digits is odd.
The square root of 15980 is about 126.4120247445. The cubic root of 15980 is about 25.1879172780.
The spelling of 15980 in words is "fifteen thousand, nine hundred eighty".