13223268 has 18 divisors (see below), whose sum is σ = 33425574. Its totient is φ = 4407744.

The previous prime is 13223239. The next prime is 13223269. The reversal of 13223268 is 86232231.

It can be written as a sum of positive squares in only one way, i.e., 11009124 + 2214144 = 3318^2 + 1488^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13223269) 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 5 ways as a sum of consecutive naturals, for example, 183621 + ... + 183692.

Almost surely, 2^13223268 is an apocalyptic number.

13223268 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13223268 is an abundant number, since it is smaller than the sum of its proper divisors (20202306).

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

13223268 is a wasteful number, since it uses less digits than its factorization.

13223268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367323 (or 367318 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 13223268 is about 3636.3811681396. The cubic root of 13223268 is about 236.4719322101.

Adding to 13223268 its reverse (86232231), we get a palindrome (99455499).

The spelling of 13223268 in words is "thirteen million, two hundred twenty-three thousand, two hundred sixty-eight".