12390318 has 24 divisors (see below), whose sum is σ = 28259400. Its totient is φ = 3912624.

The previous prime is 12390317. The next prime is 12390347. The reversal of 12390318 is 81309321.

It is a super-2 number, since 2×12390318² = 307039960282248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12390291 and 12390300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17773 + ... + 18456.

It is an arithmetic number, because the mean of its divisors is an integer number (1177475).

Almost surely, 2^12390318 is an apocalyptic number.

12390318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12390318 is an abundant number, since it is smaller than the sum of its proper divisors (15869082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12390318 is a wasteful number, since it uses less digits than its factorization.

12390318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36256 (or 36253 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 12390318 is about 3519.9883522535. The cubic root of 12390318 is about 231.3986482312.

Adding to 12390318 its reverse (81309321), we get a palindrome (93699639).

The spelling of 12390318 in words is "twelve million, three hundred ninety thousand, three hundred eighteen".