12289880 has 32 divisors (see below), whose sum is σ = 27907200. Its totient is φ = 4870656.

The previous prime is 12289847. The next prime is 12289891. The reversal of 12289880 is 8898221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3161 + ... + 5879.

It is an arithmetic number, because the mean of its divisors is an integer number (872100).

Almost surely, 2^12289880 is an apocalyptic number.

12289880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12289880 is an abundant number, since it is smaller than the sum of its proper divisors (15617320).

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

12289880 is a wasteful number, since it uses less digits than its factorization.

12289880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843 (or 2839 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 12289880 is about 3505.6925136127. The cubic root of 12289880 is about 230.7716990049.

The spelling of 12289880 in words is "twelve million, two hundred eighty-nine thousand, eight hundred eighty".