216423324 has 36 divisors (see below), whose sum is σ = 589153656. Its totient is φ = 66591648.

The previous prime is 216423313. The next prime is 216423349. The reversal of 216423324 is 423324612.

216423324 is a `hidden beast` number, since 216 + 423 + 3 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230754 + ... + 231689.

Almost surely, 2^216423324 is an apocalyptic number.

It is an amenable number.

216423324 is an abundant number, since it is smaller than the sum of its proper divisors (372730332).

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

216423324 is a wasteful number, since it uses less digits than its factorization.

216423324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462466 (or 462461 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 216423324 is about 14711.3331822782. Note that the first 3 decimals coincide. The cubic root of 216423324 is about 600.3917108820.

Adding to 216423324 its reverse (423324612), we get a palindrome (639747936).

The spelling of 216423324 in words is "two hundred sixteen million, four hundred twenty-three thousand, three hundred twenty-four".