12422656 has 40 divisors (see below), whose sum is σ = 26147880. Its totient is φ = 5879808.

The previous prime is 12422653. The next prime is 12422659. The reversal of 12422656 is 65622421.

It is an interprime number because it is at equal distance from previous prime (12422653) and next prime (12422659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12422651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9090 + ... + 10366.

It is an arithmetic number, because the mean of its divisors is an integer number (653697).

Almost surely, 2^12422656 is an apocalyptic number.

12422656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12422656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13073940).

12422656 is an abundant number, since it is smaller than the sum of its proper divisors (13725224).

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

12422656 is an equidigital number, since it uses as much as digits as its factorization.

12422656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1298 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 12422656 is about 3524.5788400886. The cubic root of 12422656 is about 231.5997856267.

The spelling of 12422656 in words is "twelve million, four hundred twenty-two thousand, six hundred fifty-six".