13218284 has 12 divisors (see below), whose sum is σ = 24137904. Its totient is φ = 6321744.

The previous prime is 13218269. The next prime is 13218311. The reversal of 13218284 is 48281231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71747 + ... + 71930.

It is an arithmetic number, because the mean of its divisors is an integer number (2011492).

Almost surely, 2^13218284 is an apocalyptic number.

It is an amenable number.

13218284 is a deficient number, since it is larger than the sum of its proper divisors (10919620).

13218284 is a wasteful number, since it uses less digits than its factorization.

13218284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143704 (or 143702 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 13218284 is about 3635.6958068573. The cubic root of 13218284 is about 236.4422188237.

The spelling of 13218284 in words is "thirteen million, two hundred eighteen thousand, two hundred eighty-four".