216304206 has 16 divisors (see below), whose sum is σ = 433160784. Its totient is φ = 72009344.

The previous prime is 216304181. The next prime is 216304237. The reversal of 216304206 is 602403612.

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, 17835 + ... + 27398.

It is an arithmetic number, because the mean of its divisors is an integer number (27072549).

Almost surely, 2^216304206 is an apocalyptic number.

216304206 is an abundant number, since it is smaller than the sum of its proper divisors (216856578).

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

216304206 is a wasteful number, since it uses less digits than its factorization.

216304206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46035.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 216304206 is about 14707.2841136629. The cubic root of 216304206 is about 600.2815400935.

Adding to 216304206 its reverse (602403612), we get a palindrome (818707818).

The spelling of 216304206 in words is "two hundred sixteen million, three hundred four thousand, two hundred six".