12234478 has 4 divisors (see below), whose sum is σ = 18351720. Its totient is φ = 6117238.

The previous prime is 12234437. The next prime is 12234517. The reversal of 12234478 is 87443221.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3058618 + ... + 3058621.

It is an arithmetic number, because the mean of its divisors is an integer number (4587930).

Almost surely, 2^12234478 is an apocalyptic number.

12234478 is a deficient number, since it is larger than the sum of its proper divisors (6117242).

12234478 is an equidigital number, since it uses as much as digits as its factorization.

12234478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117241.

The product of its digits is 10752, while the sum is 31.

The square root of 12234478 is about 3497.7818685561. The cubic root of 12234478 is about 230.4244085630.

Adding to 12234478 its reverse (87443221), we get a palindrome (99677699).

The spelling of 12234478 in words is "twelve million, two hundred thirty-four thousand, four hundred seventy-eight".