12722906 has 16 divisors (see below), whose sum is σ = 22057920. Its totient is φ = 5390880.

The previous prime is 12722903. The next prime is 12722911. The reversal of 12722906 is 60922721.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12722903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3860 + ... + 6351.

It is an arithmetic number, because the mean of its divisors is an integer number (1378620).

Almost surely, 2^12722906 is an apocalyptic number.

12722906 is a deficient number, since it is larger than the sum of its proper divisors (9335014).

12722906 is a wasteful number, since it uses less digits than its factorization.

12722906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10309.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 12722906 is about 3566.9182777294. The cubic root of 12722906 is about 233.4508392272.

The spelling of 12722906 in words is "twelve million, seven hundred twenty-two thousand, nine hundred six".