12617226 has 24 divisors (see below), whose sum is σ = 27597024. Its totient is φ = 4165800.

The previous prime is 12617221. The next prime is 12617243. The reversal of 12617226 is 62271621.

12617226 = 289² + 290² + ... + 395².

It is a self number, because there is not a number n which added to its sum of digits gives 12617226.

It is not an unprimeable number, because it can be changed into a prime (12617221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1350 + ... + 5201.

It is an arithmetic number, because the mean of its divisors is an integer number (1149876).

Almost surely, 2^12617226 is an apocalyptic number.

12617226 is an abundant number, since it is smaller than the sum of its proper divisors (14979798).

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

12617226 is a wasteful number, since it uses less digits than its factorization.

12617226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666 (or 6663 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 12617226 is about 3552.0734789697. The cubic root of 12617226 is about 232.8026720563.

Adding to 12617226 its reverse (62271621), we get a palindrome (74888847).

The spelling of 12617226 in words is "twelve million, six hundred seventeen thousand, two hundred twenty-six".