12305380 has 12 divisors (see below), whose sum is σ = 25841340. Its totient is φ = 4922144.

The previous prime is 12305333. The next prime is 12305383. The reversal of 12305380 is 8350321.

It can be written as a sum of positive squares in 2 ways, for example, as 5503716 + 6801664 = 2346^2 + 2608^2 .

It is not an unprimeable number, because it can be changed into a prime (12305383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307615 + ... + 307654.

It is an arithmetic number, because the mean of its divisors is an integer number (2153445).

Almost surely, 2^12305380 is an apocalyptic number.

12305380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12305380 is an abundant number, since it is smaller than the sum of its proper divisors (13535960).

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

12305380 is a wasteful number, since it uses less digits than its factorization.

12305380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615278 (or 615276 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12305380 is about 3507.9025071971. The cubic root of 12305380 is about 230.8686746910.

The spelling of 12305380 in words is "twelve million, three hundred five thousand, three hundred eighty".