12805380 has 72 divisors (see below), whose sum is σ = 44396352. Its totient is φ = 2926656.

The previous prime is 12805349. The next prime is 12805417. The reversal of 12805380 is 8350821.

It is a happy number.

12805380 is a `hidden beast` number, since 1 + 280 + 5 + 380 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3822 + ... + 6341.

It is an arithmetic number, because the mean of its divisors is an integer number (616616).

Almost surely, 2^12805380 is an apocalyptic number.

12805380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12805380 is an abundant number, since it is smaller than the sum of its proper divisors (31590972).

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

12805380 is a wasteful number, since it uses less digits than its factorization.

12805380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10185 (or 10180 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12805380 is about 3578.4605628678. The cubic root of 12805380 is about 233.9541878319.

The spelling of 12805380 in words is "twelve million, eight hundred five thousand, three hundred eighty".