12172622 has 16 divisors (see below), whose sum is σ = 22764672. Its totient is φ = 4742520.

The previous prime is 12172609. The next prime is 12172649. The reversal of 12172622 is 22627121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39368 + ... + 39675.

It is an arithmetic number, because the mean of its divisors is an integer number (1422792).

Almost surely, 2^12172622 is an apocalyptic number.

12172622 is a deficient number, since it is larger than the sum of its proper divisors (10592050).

12172622 is a wasteful number, since it uses less digits than its factorization.

12172622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79063.

The product of its digits is 672, while the sum is 23.

The square root of 12172622 is about 3488.9284888057. The cubic root of 12172622 is about 230.0354198759.

Adding to 12172622 its reverse (22627121), we get a palindrome (34799743).

The spelling of 12172622 in words is "twelve million, one hundred seventy-two thousand, six hundred twenty-two".