13223864 has 16 divisors (see below), whose sum is σ = 24949320. Its totient is φ = 6570720.

The previous prime is 13223863. The next prime is 13223879. The reversal of 13223864 is 46832231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223863) by changing a digit.

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, 3767 + ... + 6374.

Almost surely, 2^13223864 is an apocalyptic number.

It is an amenable number.

13223864 is a deficient number, since it is larger than the sum of its proper divisors (11725456).

13223864 is a wasteful number, since it uses less digits than its factorization.

13223864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10310 (or 10306 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 13223864 is about 3636.4631168211. The cubic root of 13223864 is about 236.4754849162.

The spelling of 13223864 in words is "thirteen million, two hundred twenty-three thousand, eight hundred sixty-four".