12338738 has 4 divisors (see below), whose sum is σ = 18508110. Its totient is φ = 6169368.

The previous prime is 12338737. The next prime is 12338747. The reversal of 12338738 is 83783321.

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

It can be written as a sum of positive squares in only one way, i.e., 8508889 + 3829849 = 2917^2 + 1957^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12338698 and 12338707.

It is not an unprimeable number, because it can be changed into a prime (12338731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3084683 + ... + 3084686.

Almost surely, 2^12338738 is an apocalyptic number.

12338738 is a deficient number, since it is larger than the sum of its proper divisors (6169372).

12338738 is an equidigital number, since it uses as much as digits as its factorization.

12338738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169371.

The product of its digits is 24192, while the sum is 35.

The square root of 12338738 is about 3512.6539823900. The cubic root of 12338738 is about 231.0771030012.

The spelling of 12338738 in words is "twelve million, three hundred thirty-eight thousand, seven hundred thirty-eight".