13218032 has 20 divisors (see below), whose sum is σ = 25670976. Its totient is φ = 6593280.

The previous prime is 13218019. The next prime is 13218047. The reversal of 13218032 is 23081231.

It is a junction number, because it is equal to n+sod(n) for n = 13217995 and 13218013.

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 3 ways as a sum of consecutive naturals, for example, 9032 + ... + 10392.

Almost surely, 2^13218032 is an apocalyptic number.

It is an amenable number.

13218032 is a deficient number, since it is larger than the sum of its proper divisors (12452944).

13218032 is a wasteful number, since it uses less digits than its factorization.

13218032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 13218032 is about 3635.6611503274. The cubic root of 13218032 is about 236.4407162631.

Adding to 13218032 its reverse (23081231), we get a palindrome (36299263).

The spelling of 13218032 in words is "thirteen million, two hundred eighteen thousand, thirty-two".