12389140 has 24 divisors (see below), whose sum is σ = 27387360. Its totient is φ = 4694688.

The previous prime is 12389137. The next prime is 12389147. The reversal of 12389140 is 4198321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12389099 and 12389108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15922 + ... + 16681.

It is an arithmetic number, because the mean of its divisors is an integer number (1141140).

Almost surely, 2^12389140 is an apocalyptic number.

12389140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12389140 is an abundant number, since it is smaller than the sum of its proper divisors (14998220).

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

12389140 is a wasteful number, since it uses less digits than its factorization.

12389140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32631 (or 32629 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12389140 is about 3519.8210181769. The cubic root of 12389140 is about 231.3913146490.

The spelling of 12389140 in words is "twelve million, three hundred eighty-nine thousand, one hundred forty".