12785422 has 8 divisors (see below), whose sum is σ = 20653416. Its totient is φ = 5900952.

The previous prime is 12785419. The next prime is 12785449. The reversal of 12785422 is 22458721.

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 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, 245848 + ... + 245899.

It is an arithmetic number, because the mean of its divisors is an integer number (2581677).

Almost surely, 2^12785422 is an apocalyptic number.

12785422 is a deficient number, since it is larger than the sum of its proper divisors (7867994).

12785422 is a wasteful number, since it uses less digits than its factorization.

12785422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491762.

The product of its digits is 8960, while the sum is 31.

The square root of 12785422 is about 3575.6708461490. The cubic root of 12785422 is about 233.8325804668.

The spelling of 12785422 in words is "twelve million, seven hundred eighty-five thousand, four hundred twenty-two".