12305136 has 40 divisors (see below), whose sum is σ = 31939920. Its totient is φ = 4082176.

The previous prime is 12305113. The next prime is 12305149. The reversal of 12305136 is 63150321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12436 + ... + 13388.

It is an arithmetic number, because the mean of its divisors is an integer number (798498).

Almost surely, 2^12305136 is an apocalyptic number.

12305136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12305136 is an abundant number, since it is smaller than the sum of its proper divisors (19634784).

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

12305136 is a wasteful number, since it uses less digits than its factorization.

12305136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233 (or 1227 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 12305136 is about 3507.8677284071. The cubic root of 12305136 is about 230.8671487370.

Adding to 12305136 its reverse (63150321), we get a palindrome (75455457).

The spelling of 12305136 in words is "twelve million, three hundred five thousand, one hundred thirty-six".