12308436 has 108 divisors (see below), whose sum is σ = 37474528. Its totient is φ = 3464208.

The previous prime is 12308423. The next prime is 12308453. The reversal of 12308436 is 63480321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 183675 + ... + 183741.

It is a vampire number, since it can be written as 3402 ⋅ 3618 (with its own digits).

Almost surely, 2^12308436 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 12308436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18737264).

12308436 is an abundant number, since it is smaller than the sum of its proper divisors (25166092).

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

12308436 is an frugal number, since it uses more digits than its factorization.

12308436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12308436 is about 3508.3380680886. The cubic root of 12308436 is about 230.8877849303.

Adding to 12308436 its reverse (63480321), we get a palindrome (75788757).

The spelling of 12308436 in words is "twelve million, three hundred eight thousand, four hundred thirty-six".