180144 has 50 divisors (see below), whose sum is σ = 525140.
Its totient is φ = 59616.
The previous prime is 180137. The next prime is 180161. The reversal of 180144 is 441081.
It can be divided in two parts, 180 and 144, that added together give a square (324 = 182).
It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a plaindrome in base 11.
It is a nialpdrome in base 12.
It is a zygodrome in base 11.
It is an unprimeable number.
180144 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1227 + ... + 1365.
2180144 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 180144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262570).
180144 is an abundant number, since it is smaller than the sum of its proper divisors (344996).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
180144 is a wasteful number, since it uses less digits than its factorization.
180144 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 159 (or 144 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 18.
The square root of 180144 is about 424.4337404119.
The cubic root of 180144 is about 56.4772142960.
The spelling of 180144 in words is "one hundred eighty thousand, one hundred forty-four".