12918660 has 48 divisors (see below), whose sum is σ = 36456000. Its totient is φ = 3417984.

The previous prime is 12918637. The next prime is 12918671. The reversal of 12918660 is 6681921.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7566 + ... + 9114.

It is an arithmetic number, because the mean of its divisors is an integer number (759500).

Almost surely, 2^12918660 is an apocalyptic number.

12918660 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 12918660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18228000).

12918660 is an abundant number, since it is smaller than the sum of its proper divisors (23537340).

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

12918660 is a wasteful number, since it uses less digits than its factorization.

12918660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12918660 is about 3594.2537473028. The cubic root of 12918660 is about 234.6420383861.

The spelling of 12918660 in words is "twelve million, nine hundred eighteen thousand, six hundred sixty".