12817422 has 24 divisors (see below), whose sum is σ = 29405376. Its totient is φ = 4021056.

The previous prime is 12817421. The next prime is 12817459. The reversal of 12817422 is 22471821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12817421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20638 + ... + 21249.

It is an arithmetic number, because the mean of its divisors is an integer number (1225224).

Almost surely, 2^12817422 is an apocalyptic number.

12817422 is an abundant number, since it is smaller than the sum of its proper divisors (16587954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12817422 is a wasteful number, since it uses less digits than its factorization.

12817422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41912 (or 41909 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12817422 is about 3580.1427345848. The cubic root of 12817422 is about 234.0275006031.

The spelling of 12817422 in words is "twelve million, eight hundred seventeen thousand, four hundred twenty-two".