13218968 has 16 divisors (see below), whose sum is σ = 28326480. Its totient is φ = 5665248.

The previous prime is 13218967. The next prime is 13218977. The reversal of 13218968 is 86981231.

It is a super-2 number, since 2×13218968² = 349482229970048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13218967) 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 in 3 ways as a sum of consecutive naturals, for example, 117971 + ... + 118082.

It is an arithmetic number, because the mean of its divisors is an integer number (1770405).

Almost surely, 2^13218968 is an apocalyptic number.

It is an amenable number.

13218968 is an abundant number, since it is smaller than the sum of its proper divisors (15107512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13218968 is a wasteful number, since it uses less digits than its factorization.

13218968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236066 (or 236062 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 13218968 is about 3635.7898729162. The cubic root of 13218968 is about 236.4462971062.

The spelling of 13218968 in words is "thirteen million, two hundred eighteen thousand, nine hundred sixty-eight".