12389736 has 32 divisors (see below), whose sum is σ = 32797440. Its totient is φ = 3886848.

The previous prime is 12389723. The next prime is 12389737. The reversal of 12389736 is 63798321.

12389736 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12389694 and 12389703.

It is not an unprimeable number, because it can be changed into a prime (12389737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14776 + ... + 15591.

It is an arithmetic number, because the mean of its divisors is an integer number (1024920).

Almost surely, 2^12389736 is an apocalyptic number.

It is an amenable number.

12389736 is an abundant number, since it is smaller than the sum of its proper divisors (20407704).

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

12389736 is a wasteful number, since it uses less digits than its factorization.

12389736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30393 (or 30389 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 12389736 is about 3519.9056805545. The cubic root of 12389736 is about 231.3950250764.

The spelling of 12389736 in words is "twelve million, three hundred eighty-nine thousand, seven hundred thirty-six".