216322204 has 24 divisors (see below), whose sum is σ = 436933728. Its totient is φ = 91790400.

The previous prime is 216322181. The next prime is 216322219. The reversal of 216322204 is 402223612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35419 + ... + 41074.

It is an arithmetic number, because the mean of its divisors is an integer number (18205572).

Almost surely, 2^216322204 is an apocalyptic number.

It is an amenable number.

216322204 is an abundant number, since it is smaller than the sum of its proper divisors (220611524).

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

216322204 is a wasteful number, since it uses less digits than its factorization.

216322204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76605 (or 76603 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 216322204 is about 14707.8959746117. The cubic root of 216322204 is about 600.2981888182.

Adding to 216322204 its reverse (402223612), we get a palindrome (618545816).

The spelling of 216322204 in words is "two hundred sixteen million, three hundred twenty-two thousand, two hundred four".