12389240 has 16 divisors (see below), whose sum is σ = 27875880. Its totient is φ = 4955680.

The previous prime is 12389239. The next prime is 12389263. The reversal of 12389240 is 4298321.

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 3 ways as a sum of consecutive naturals, for example, 154826 + ... + 154905.

Almost surely, 2^12389240 is an apocalyptic number.

12389240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12389240 is an abundant number, since it is smaller than the sum of its proper divisors (15486640).

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

12389240 is a wasteful number, since it uses less digits than its factorization.

12389240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309742 (or 309738 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 12389240 is about 3519.8352234160. The cubic root of 12389240 is about 231.3919372123.

The spelling of 12389240 in words is "twelve million, three hundred eighty-nine thousand, two hundred forty".