13224388 has 12 divisors (see below), whose sum is σ = 23460220. Its totient is φ = 6521472.

The previous prime is 13224347. The next prime is 13224391. The reversal of 13224388 is 88342231.

It can be written as a sum of positive squares in 2 ways, for example, as 9351364 + 3873024 = 3058^2 + 1968^2 .

It is an unprimeable number.

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, 22353 + ... + 22936.

Almost surely, 2^13224388 is an apocalyptic number.

It is an amenable number.

13224388 is a deficient number, since it is larger than the sum of its proper divisors (10235832).

13224388 is a wasteful number, since it uses less digits than its factorization.

13224388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45366 (or 45364 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 13224388 is about 3636.5351641363. The cubic root of 13224388 is about 236.4786083481.

The spelling of 13224388 in words is "thirteen million, two hundred twenty-four thousand, three hundred eighty-eight".