12636436 has 12 divisors (see below), whose sum is σ = 22186612. Its totient is φ = 6297408.

The previous prime is 12636397. The next prime is 12636461. The reversal of 12636436 is 63463621.

It can be written as a sum of positive squares in 2 ways, for example, as 2268036 + 10368400 = 1506^2 + 3220^2 .

It is a super-3 number, since 3×12636436³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12636398 and 12636407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3795 + ... + 6298.

Almost surely, 2^12636436 is an apocalyptic number.

It is an amenable number.

12636436 is a deficient number, since it is larger than the sum of its proper divisors (9550176).

12636436 is a wasteful number, since it uses less digits than its factorization.

12636436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10410 (or 10408 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 12636436 is about 3554.7765049297. The cubic root of 12636436 is about 232.9207611832.

The spelling of 12636436 in words is "twelve million, six hundred thirty-six thousand, four hundred thirty-six".