216015164 has 24 divisors (see below), whose sum is σ = 384406176. Its totient is φ = 106200000.

The previous prime is 216015089. The next prime is 216015167. The reversal of 216015164 is 461510612.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216015167) by changing a digit.

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, 59234 + ... + 62774.

It is an arithmetic number, because the mean of its divisors is an integer number (16016924).

Almost surely, 2^216015164 is an apocalyptic number.

It is an amenable number.

216015164 is a deficient number, since it is larger than the sum of its proper divisors (168391012).

216015164 is a wasteful number, since it uses less digits than its factorization.

216015164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 216015164 is about 14697.4543374014. The cubic root of 216015164 is about 600.0140404122.

Adding to 216015164 its reverse (461510612), we get a palindrome (677525776).

The spelling of 216015164 in words is "two hundred sixteen million, fifteen thousand, one hundred sixty-four".