12383640 has 96 divisors (see below), whose sum is σ = 41277600. Its totient is φ = 3217920.

The previous prime is 12383629. The next prime is 12383659. The reversal of 12383640 is 4638321.

It is a happy number.

12383640 is a `hidden beast` number, since 12 + 3 + 8 + 3 + 640 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14341 + ... + 15179.

It is an arithmetic number, because the mean of its divisors is an integer number (429975).

Almost surely, 2^12383640 is an apocalyptic number.

12383640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12383640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20638800).

12383640 is an abundant number, since it is smaller than the sum of its proper divisors (28893960).

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

12383640 is a wasteful number, since it uses less digits than its factorization.

12383640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 12383640 is about 3519.0396417205. The cubic root of 12383640 is about 231.3570685108.

The spelling of 12383640 in words is "twelve million, three hundred eighty-three thousand, six hundred forty".