12238747 has 4 divisors (see below), whose sum is σ = 12260536. Its totient is φ = 12216960.

The previous prime is 12238741. The next prime is 12238757. The reversal of 12238747 is 74783221.

12238747 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12238747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12238741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10029 + ... + 11182.

It is an arithmetic number, because the mean of its divisors is an integer number (3065134).

Almost surely, 2^12238747 is an apocalyptic number.

12238747 is a deficient number, since it is larger than the sum of its proper divisors (21789).

12238747 is an equidigital number, since it uses as much as digits as its factorization.

12238747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21788.

The product of its digits is 18816, while the sum is 34.

The square root of 12238747 is about 3498.3920592181. The cubic root of 12238747 is about 230.4512062574.

The spelling of 12238747 in words is "twelve million, two hundred thirty-eight thousand, seven hundred forty-seven".