12227636 has 12 divisors (see below), whose sum is σ = 21517860. Its totient is φ = 6079680.

The previous prime is 12227627. The next prime is 12227681. The reversal of 12227636 is 63672221.

It can be written as a sum of positive squares in 2 ways, for example, as 256036 + 11971600 = 506^2 + 3460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12227599 and 12227608.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7721 + ... + 9168.

It is an arithmetic number, because the mean of its divisors is an integer number (1793155).

Almost surely, 2^12227636 is an apocalyptic number.

It is an amenable number.

12227636 is a deficient number, since it is larger than the sum of its proper divisors (9290224).

12227636 is a wasteful number, since it uses less digits than its factorization.

12227636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17074 (or 17072 counting only the distinct ones).

The product of its digits is 6048, while the sum is 29.

The square root of 12227636 is about 3496.8036833657. The cubic root of 12227636 is about 230.3814464307.

Adding to 12227636 its reverse (63672221), we get a palindrome (75899857).

The spelling of 12227636 in words is "twelve million, two hundred twenty-seven thousand, six hundred thirty-six".