12287636 has 6 divisors (see below), whose sum is σ = 21503370. Its totient is φ = 6143816.

The previous prime is 12287609. The next prime is 12287641. The reversal of 12287636 is 63678221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 37636 = 3500^2 + 194^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12287596 and 12287605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1535951 + ... + 1535958.

It is an arithmetic number, because the mean of its divisors is an integer number (3583895).

Almost surely, 2^12287636 is an apocalyptic number.

It is an amenable number.

12287636 is a deficient number, since it is larger than the sum of its proper divisors (9215734).

12287636 is a wasteful number, since it uses less digits than its factorization.

12287636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071913 (or 3071911 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 12287636 is about 3505.3724481145. The cubic root of 12287636 is about 230.7576526727.

The spelling of 12287636 in words is "twelve million, two hundred eighty-seven thousand, six hundred thirty-six".