218452 has 12 divisors (see below), whose sum is σ = 411796. Its totient is φ = 100800.

The previous prime is 218447. The next prime is 218453. The reversal of 218452 is 254812.

218452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21316 + 197136 = 146^2 + 444^2 .

It is a nialpdrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218453) by changing a digit.

218452 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 3 ways as a sum of consecutive naturals, for example, 2049 + ... + 2152.

2²¹⁸⁴⁵² is an apocalyptic number.

It is an amenable number.

218452 is a deficient number, since it is larger than the sum of its proper divisors (193344).

218452 is a wasteful number, since it uses less digits than its factorization.

218452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4218 (or 4216 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 218452 is about 467.3884893747. The cubic root of 218452 is about 60.2261833174.

The spelling of 218452 in words is "two hundred eighteen thousand, four hundred fifty-two".