12656226 has 32 divisors (see below), whose sum is σ = 27874368. Its totient is φ = 3799040.

The previous prime is 12656221. The next prime is 12656227. The reversal of 12656226 is 62265621.

It is a super-3 number, since 3×12656226³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12656193 and 12656202.

It is not an unprimeable number, because it can be changed into a prime (12656221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6610 + ... + 8306.

It is an arithmetic number, because the mean of its divisors is an integer number (871074).

Almost surely, 2^12656226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12656226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13937184).

12656226 is an abundant number, since it is smaller than the sum of its proper divisors (15218142).

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

12656226 is a wasteful number, since it uses less digits than its factorization.

12656226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826.

The product of its digits is 8640, while the sum is 30.

The square root of 12656226 is about 3557.5589945917. The cubic root of 12656226 is about 233.0422906406.

The spelling of 12656226 in words is "twelve million, six hundred fifty-six thousand, two hundred twenty-six".