216236166 has 16 divisors (see below), whose sum is σ = 432641088. Its totient is φ = 72050600.

The previous prime is 216236159. The next prime is 216236171. The reversal of 216236166 is 661632612.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14881 + ... + 25571.

It is an arithmetic number, because the mean of its divisors is an integer number (27040068).

Almost surely, 2^216236166 is an apocalyptic number.

216236166 is an abundant number, since it is smaller than the sum of its proper divisors (216404922).

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

216236166 is a wasteful number, since it uses less digits than its factorization.

216236166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14067.

The product of its digits is 15552, while the sum is 33.

The square root of 216236166 is about 14704.9707922185. The cubic root of 216236166 is about 600.2185925747.

Adding to 216236166 its reverse (661632612), we get a palindrome (877868778).

The spelling of 216236166 in words is "two hundred sixteen million, two hundred thirty-six thousand, one hundred sixty-six".