13223506 has 8 divisors (see below), whose sum is σ = 20879280. Its totient is φ = 6263748.

The previous prime is 13223473. The next prime is 13223527. The reversal of 13223506 is 60532231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×13223506⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 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, 173956 + ... + 174031.

It is an arithmetic number, because the mean of its divisors is an integer number (2609910).

Almost surely, 2^13223506 is an apocalyptic number.

13223506 is a deficient number, since it is larger than the sum of its proper divisors (7655774).

13223506 is a wasteful number, since it uses less digits than its factorization.

13223506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348008.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 13223506 is about 3636.4138928345. The cubic root of 13223506 is about 236.4733509210.

Adding to 13223506 its reverse (60532231), we get a palindrome (73755737).

The spelling of 13223506 in words is "thirteen million, two hundred twenty-three thousand, five hundred six".