12383840 has 48 divisors (see below), whose sum is σ = 33439392. Its totient is φ = 4245504.

The previous prime is 12383831. The next prime is 12383851. The reversal of 12383840 is 4838321.

It is a happy number.

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, 4409 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (696654).

Almost surely, 2^12383840 is an apocalyptic number.

12383840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12383840 is an abundant number, since it is smaller than the sum of its proper divisors (21055552).

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

12383840 is a wasteful number, since it uses less digits than its factorization.

12383840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11079 (or 11071 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 12383840 is about 3519.0680584496. The cubic root of 12383840 is about 231.3583140026.

The spelling of 12383840 in words is "twelve million, three hundred eighty-three thousand, eight hundred forty".