216163226 has 4 divisors (see below), whose sum is σ = 324244842. Its totient is φ = 108081612.

The previous prime is 216163201. The next prime is 216163253. The reversal of 216163226 is 622361612.

216163226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 117180625 + 98982601 = 10825^2 + 9949^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54040805 + ... + 54040808.

Almost surely, 2^216163226 is an apocalyptic number.

216163226 is a deficient number, since it is larger than the sum of its proper divisors (108081616).

216163226 is a wasteful number, since it uses less digits than its factorization.

216163226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108081615.

The product of its digits is 5184, while the sum is 29.

The square root of 216163226 is about 14702.4904693049. The cubic root of 216163226 is about 600.1510971314.

It can be divided in two parts, 21616 and 3226, that added together give a palindrome (24842).

The spelling of 216163226 in words is "two hundred sixteen million, one hundred sixty-three thousand, two hundred twenty-six".