12307880 has 32 divisors (see below), whose sum is σ = 29824200. Its totient is φ = 4544256.

The previous prime is 12307853. The next prime is 12307891. The reversal of 12307880 is 8870321.

It can be written as a sum of positive squares in 4 ways, for example, as 6728836 + 5579044 = 2594^2 + 2362^2 .

It is a super-3 number, since 3×12307880³ (a number of 22 digits) contains 333 as substring.

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, 11315 + ... + 12354.

Almost surely, 2^12307880 is an apocalyptic number.

12307880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12307880 is an abundant number, since it is smaller than the sum of its proper divisors (17516320).

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

12307880 is a wasteful number, since it uses less digits than its factorization.

12307880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23693 (or 23689 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 12307880 is about 3508.2588273957. The cubic root of 12307880 is about 230.8843083028.

The spelling of 12307880 in words is "twelve million, three hundred seven thousand, eight hundred eighty".