12656022 has 16 divisors (see below), whose sum is σ = 25559040. Its totient is φ = 4177512.

The previous prime is 12656011. The next prime is 12656023. The reversal of 12656022 is 22065621.

It is a junction number, because it is equal to n+sod(n) for n = 12655983 and 12656001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656023) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9622 + ... + 10857.

It is an arithmetic number, because the mean of its divisors is an integer number (1597440).

Almost surely, 2^12656022 is an apocalyptic number.

12656022 is an abundant number, since it is smaller than the sum of its proper divisors (12903018).

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

12656022 is a wasteful number, since it uses less digits than its factorization.

12656022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20587.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 12656022 is about 3557.5303231315. The cubic root of 12656022 is about 233.0410385327.

The spelling of 12656022 in words is "twelve million, six hundred fifty-six thousand, twenty-two".