216964156 has 12 divisors (see below), whose sum is σ = 380985192. Its totient is φ = 108111248.

The previous prime is 216964151. The next prime is 216964171. The reversal of 216964156 is 651469612.

It is a happy number.

216964156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216964151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91390 + ... + 93733.

It is an arithmetic number, because the mean of its divisors is an integer number (31748766).

Almost surely, 2^216964156 is an apocalyptic number.

It is an amenable number.

216964156 is a deficient number, since it is larger than the sum of its proper divisors (164021036).

216964156 is a wasteful number, since it uses less digits than its factorization.

216964156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185420 (or 185418 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 216964156 is about 14729.7031877767. The cubic root of 216964156 is about 600.8914120222.

It can be divided in two parts, 21696 and 4156, that added together give a palindrome (25852).

The spelling of 216964156 in words is "two hundred sixteen million, nine hundred sixty-four thousand, one hundred fifty-six".