12516422 has 8 divisors (see below), whose sum is σ = 18792000. Its totient is φ = 6252424.

The previous prime is 12516419. The next prime is 12516431. The reversal of 12516422 is 22461521.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 5052.

It is an arithmetic number, because the mean of its divisors is an integer number (2349000).

Almost surely, 2^12516422 is an apocalyptic number.

12516422 is a deficient number, since it is larger than the sum of its proper divisors (6275578).

12516422 is a wasteful number, since it uses less digits than its factorization.

12516422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5790.

The product of its digits is 960, while the sum is 23.

The square root of 12516422 is about 3537.8555651694. The cubic root of 12516422 is about 232.1810294354.

Adding to 12516422 its reverse (22461521), we get a palindrome (34977943).

The spelling of 12516422 in words is "twelve million, five hundred sixteen thousand, four hundred twenty-two".