13218908 has 12 divisors (see below), whose sum is σ = 24350760. Its totient is φ = 6261552.

The previous prime is 13218901. The next prime is 13218923. The reversal of 13218908 is 80981231.

13218908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13218901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86891 + ... + 87042.

It is an arithmetic number, because the mean of its divisors is an integer number (2029230).

Almost surely, 2^13218908 is an apocalyptic number.

It is an amenable number.

13218908 is a deficient number, since it is larger than the sum of its proper divisors (11131852).

13218908 is a wasteful number, since it uses less digits than its factorization.

13218908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173956 (or 173954 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 13218908 is about 3635.7816216049. The cubic root of 13218908 is about 236.4459393678.

The spelling of 13218908 in words is "thirteen million, two hundred eighteen thousand, nine hundred eight".