23168218 has 4 divisors (see below), whose sum is σ = 34752330. Its totient is φ = 11584108.

The previous prime is 23168203. The next prime is 23168219. The reversal of 23168218 is 81286132.

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., 23164969 + 3249 = 4813^2 + 57^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 23168218.

It is not an unprimeable number, because it can be changed into a prime (23168219) 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 as a sum of consecutive naturals, namely, 5792053 + ... + 5792056.

Almost surely, 2^23168218 is an apocalyptic number.

23168218 is a deficient number, since it is larger than the sum of its proper divisors (11584112).

23168218 is a wasteful number, since it uses less digits than its factorization.

23168218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11584111.

The product of its digits is 4608, while the sum is 31.

The square root of 23168218 is about 4813.3375115402. The cubic root of 23168218 is about 285.0783328335.

The spelling of 23168218 in words is "twenty-three million, one hundred sixty-eight thousand, two hundred eighteen".