216204132 has 12 divisors (see below), whose sum is σ = 504476336. Its totient is φ = 72068040.

The previous prime is 216204101. The next prime is 216204187. The reversal of 216204132 is 231402612.

216204132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 216204099 and 216204108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9008494 + ... + 9008517.

Almost surely, 2^216204132 is an apocalyptic number.

It is an amenable number.

216204132 is an abundant number, since it is smaller than the sum of its proper divisors (288272204).

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

216204132 is a wasteful number, since it uses less digits than its factorization.

216204132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18017018 (or 18017016 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 216204132 is about 14703.8815283584. The cubic root of 216204132 is about 600.1889516004.

Adding to 216204132 its reverse (231402612), we get a palindrome (447606744).

It can be divided in two parts, 21620 and 4132, that added together give a palindrome (25752).

The spelling of 216204132 in words is "two hundred sixteen million, two hundred four thousand, one hundred thirty-two".