12318020 has 96 divisors (see below), whose sum is σ = 31328640. Its totient is φ = 4008960.

The previous prime is 12317993. The next prime is 12318043. The reversal of 12318020 is 2081321.

It is a self number, because there is not a number n which added to its sum of digits gives 12318020.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168704 + ... + 168776.

It is an arithmetic number, because the mean of its divisors is an integer number (326340).

Almost surely, 2^12318020 is an apocalyptic number.

12318020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12318020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15664320).

12318020 is an abundant number, since it is smaller than the sum of its proper divisors (19010620).

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

12318020 is a wasteful number, since it uses less digits than its factorization.

12318020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 163 counting only the distinct ones).

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

The square root of 12318020 is about 3509.7036911967. The cubic root of 12318020 is about 230.9476965345.

Adding to 12318020 its reverse (2081321), we get a palindrome (14399341).

The spelling of 12318020 in words is "twelve million, three hundred eighteen thousand, twenty".