12305980 has 12 divisors (see below), whose sum is σ = 25842600. Its totient is φ = 4922384.

The previous prime is 12305921. The next prime is 12305981. The reversal of 12305980 is 8950321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12305981) 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, 307630 + ... + 307669.

It is an arithmetic number, because the mean of its divisors is an integer number (2153550).

Almost surely, 2^12305980 is an apocalyptic number.

12305980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12305980 is an abundant number, since it is smaller than the sum of its proper divisors (13536620).

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

12305980 is a wasteful number, since it uses less digits than its factorization.

12305980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615308 (or 615306 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12305980 is about 3507.9880273456. The cubic root of 12305980 is about 230.8724269509.

The spelling of 12305980 in words is "twelve million, three hundred five thousand, nine hundred eighty".