12338978 has 16 divisors (see below), whose sum is σ = 19251000. Its totient is φ = 5924352.

The previous prime is 12338947. The next prime is 12338987. The reversal of 12338978 is 87983321.

It can be written as a sum of positive squares in 4 ways, for example, as 10067929 + 2271049 = 3173^2 + 1507^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 12818 + ... + 13746.

Almost surely, 2^12338978 is an apocalyptic number.

12338978 is a deficient number, since it is larger than the sum of its proper divisors (6912022).

12338978 is a wasteful number, since it uses less digits than its factorization.

12338978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189.

The product of its digits is 72576, while the sum is 41.

The square root of 12338978 is about 3512.6881444273. The cubic root of 12338978 is about 231.0786012135.

The spelling of 12338978 in words is "twelve million, three hundred thirty-eight thousand, nine hundred seventy-eight".