13218412 has 12 divisors (see below), whose sum is σ = 23569056. Its totient is φ = 6484400.

The previous prime is 13218409. The next prime is 13218463. The reversal of 13218412 is 21481231.

It is a happy number.

13218412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30964 + ... + 31387.

It is an arithmetic number, because the mean of its divisors is an integer number (1964088).

Almost surely, 2^13218412 is an apocalyptic number.

It is an amenable number.

13218412 is a deficient number, since it is larger than the sum of its proper divisors (10350644).

13218412 is a wasteful number, since it uses less digits than its factorization.

13218412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62408 (or 62406 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

The square root of 13218412 is about 3635.7134100476. The cubic root of 13218412 is about 236.4429820218.

Adding to 13218412 its reverse (21481231), we get a palindrome (34699643).

The spelling of 13218412 in words is "thirteen million, two hundred eighteen thousand, four hundred twelve".