216324468 has 72 divisors (see below), whose sum is σ = 559016640. Its totient is φ = 70519680.

The previous prime is 216324467. The next prime is 216324497. The reversal of 216324468 is 864423612.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216324461) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342513 + ... + 343143.

It is an arithmetic number, because the mean of its divisors is an integer number (7764120).

Almost surely, 2^216324468 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 216324468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279508320).

216324468 is an abundant number, since it is smaller than the sum of its proper divisors (342692172).

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

216324468 is a wasteful number, since it uses less digits than its factorization.

216324468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 832 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 216324468 is about 14707.9729398718. The cubic root of 216324468 is about 600.3002830251.

The spelling of 216324468 in words is "two hundred sixteen million, three hundred twenty-four thousand, four hundred sixty-eight".