243180 has 72 divisors (see below), whose sum is σ = 847392. Its totient is φ = 55296.

The previous prime is 243167. The next prime is 243197. The reversal of 243180 is 81342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

243180 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1164 + ... + 1356.

2²⁴³¹⁸⁰ is an apocalyptic number.

243180 is a gapful number since it is divisible by the number (20) 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 243180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423696).

243180 is an abundant number, since it is smaller than the sum of its proper divisors (604212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243180 is a wasteful number, since it uses less digits than its factorization.

243180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 243180 is about 493.1328421430. The cubic root of 243180 is about 62.4179189170.

The spelling of 243180 in words is "two hundred forty-three thousand, one hundred eighty".