12389730 has 32 divisors (see below), whose sum is σ = 29925504. Its totient is φ = 3282816.

The previous prime is 12389723. The next prime is 12389737. The reversal of 12389730 is 3798321.

12389730 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 an interprime number because it is at equal distance from previous prime (12389723) and next prime (12389737).

It is a junction number, because it is equal to n+sod(n) for n = 12389691 and 12389700.

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 15 ways as a sum of consecutive naturals, for example, 3774 + ... + 6246.

It is an arithmetic number, because the mean of its divisors is an integer number (935172).

Almost surely, 2^12389730 is an apocalyptic number.

12389730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12389730 is an abundant number, since it is smaller than the sum of its proper divisors (17535774).

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

12389730 is a wasteful number, since it uses less digits than its factorization.

12389730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 12389730 is about 3519.9048282589. The cubic root of 12389730 is about 231.3949877237.

The spelling of 12389730 in words is "twelve million, three hundred eighty-nine thousand, seven hundred thirty".