12258636 has 48 divisors (see below), whose sum is σ = 31046400. Its totient is φ = 3742272.

The previous prime is 12258601. The next prime is 12258637. The reversal of 12258636 is 63685221.

12258636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12258597 and 12258606.

It is not an unprimeable number, because it can be changed into a prime (12258637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27705 + ... + 28143.

It is an arithmetic number, because the mean of its divisors is an integer number (646800).

Almost surely, 2^12258636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12258636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15523200).

12258636 is an abundant number, since it is smaller than the sum of its proper divisors (18787764).

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

12258636 is a wasteful number, since it uses less digits than its factorization.

12258636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 636 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 12258636 is about 3501.2334969265. The cubic root of 12258636 is about 230.5759729363.

The spelling of 12258636 in words is "twelve million, two hundred fifty-eight thousand, six hundred thirty-six".