12992638 has 8 divisors (see below), whose sum is σ = 20161080. Its totient is φ = 6272280.

The previous prime is 12992621. The next prime is 12992653. The reversal of 12992638 is 83629921.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12992638.

It is a congruent number.

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, 111948 + ... + 112063.

It is an arithmetic number, because the mean of its divisors is an integer number (2520135).

Almost surely, 2^12992638 is an apocalyptic number.

12992638 is a deficient number, since it is larger than the sum of its proper divisors (7168442).

12992638 is a wasteful number, since it uses less digits than its factorization.

12992638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224042.

The product of its digits is 46656, while the sum is 40.

The square root of 12992638 is about 3604.5302051724. The cubic root of 12992638 is about 235.0890744267.

The spelling of 12992638 in words is "twelve million, nine hundred ninety-two thousand, six hundred thirty-eight".