216452 has 12 divisors (see below), whose sum is σ = 386316. Its totient is φ = 106080.

The previous prime is 216451. The next prime is 216481. The reversal of 216452 is 254612.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 141376 + 75076 = 376^2 + 274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299 + ... + 722.

It is an arithmetic number, because the mean of its divisors is an integer number (32193).

2²¹⁶⁴⁵² is an apocalyptic number.

It is an amenable number.

216452 is a deficient number, since it is larger than the sum of its proper divisors (169864).

216452 is a wasteful number, since it uses less digits than its factorization.

216452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078 (or 1076 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 216452 is about 465.2440219928. The cubic root of 216452 is about 60.0418226928.

The spelling of 216452 in words is "two hundred sixteen thousand, four hundred fifty-two".