12918380 has 24 divisors (see below), whose sum is σ = 27213648. Its totient is φ = 5151168.

The previous prime is 12918371. The next prime is 12918391. The reversal of 12918380 is 8381921.

12918380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7127 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (1133902).

Almost surely, 2^12918380 is an apocalyptic number.

12918380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12918380 is an abundant number, since it is smaller than the sum of its proper divisors (14295268).

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

12918380 is a wasteful number, since it uses less digits than its factorization.

12918380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 12918380 is about 3594.2147960299. The cubic root of 12918380 is about 234.6403431575.

The spelling of 12918380 in words is "twelve million, nine hundred eighteen thousand, three hundred eighty".