12322978 has 4 divisors (see below), whose sum is σ = 18484470. Its totient is φ = 6161488.

The previous prime is 12322969. The next prime is 12322979. The reversal of 12322978 is 87922321.

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., 7601049 + 4721929 = 2757^2 + 2173^2 .

It is not an unprimeable number, because it can be changed into a prime (12322979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3080743 + ... + 3080746.

Almost surely, 2^12322978 is an apocalyptic number.

12322978 is a deficient number, since it is larger than the sum of its proper divisors (6161492).

12322978 is an equidigital number, since it uses as much as digits as its factorization.

12322978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161491.

The product of its digits is 12096, while the sum is 34.

The square root of 12322978 is about 3510.4099475702. The cubic root of 12322978 is about 230.9786778418.

The spelling of 12322978 in words is "twelve million, three hundred twenty-two thousand, nine hundred seventy-eight".