12000636 has 30 divisors (see below), whose sum is σ = 31372880. Its totient is φ = 4000104.

The previous prime is 12000629. The next prime is 12000643. The reversal of 12000636 is 63600021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12000629) and next prime (12000643).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18196 + ... + 18843.

Almost surely, 2^12000636 is an apocalyptic number.

It is an amenable number.

12000636 is an abundant number, since it is smaller than the sum of its proper divisors (19372244).

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

12000636 is a wasteful number, since it uses less digits than its factorization.

12000636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37055 (or 37044 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 12000636 is about 3464.1934126143. The cubic root of 12000636 is about 228.9468930962.

Adding to 12000636 its reverse (63600021), we get a palindrome (75600657).

The spelling of 12000636 in words is "twelve million, six hundred thirty-six", and thus it is an aban number.