216456132 has 48 divisors (see below), whose sum is σ = 540691200. Its totient is φ = 67191840.

The previous prime is 216456061. The next prime is 216456143. The reversal of 216456132 is 231654612.

It is a self number, because there is not a number n which added to its sum of digits gives 216456132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5407 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (11264400).

Almost surely, 2^216456132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216456132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270345600).

216456132 is an abundant number, since it is smaller than the sum of its proper divisors (324235068).

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

216456132 is a wasteful number, since it uses less digits than its factorization.

216456132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16176 (or 16174 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 216456132 is about 14712.4481987193. The cubic root of 216456132 is about 600.4220475013.

The spelling of 216456132 in words is "two hundred sixteen million, four hundred fifty-six thousand, one hundred thirty-two".