12320018 has 8 divisors (see below), whose sum is σ = 19452720. Its totient is φ = 5835780.

The previous prime is 12320017. The next prime is 12320023. The reversal of 12320018 is 81002321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12319978 and 12320005.

It is not an unprimeable number, because it can be changed into a prime (12320017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162068 + ... + 162143.

It is an arithmetic number, because the mean of its divisors is an integer number (2431590).

Almost surely, 2^12320018 is an apocalyptic number.

12320018 is a deficient number, since it is larger than the sum of its proper divisors (7132702).

12320018 is a wasteful number, since it uses less digits than its factorization.

12320018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324232.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12320018 is about 3509.9883190689. The cubic root of 12320018 is about 230.9601825388.

Adding to 12320018 its reverse (81002321), we get a palindrome (93322339).

The spelling of 12320018 in words is "twelve million, three hundred twenty thousand, eighteen".