12839730 has 16 divisors (see below), whose sum is σ = 30815424. Its totient is φ = 3423920.

The previous prime is 12839719. The next prime is 12839747. The reversal of 12839730 is 3793821.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12839691 and 12839700.

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, 213966 + ... + 214025.

It is an arithmetic number, because the mean of its divisors is an integer number (1925964).

Almost surely, 2^12839730 is an apocalyptic number.

12839730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12839730 is an abundant number, since it is smaller than the sum of its proper divisors (17975694).

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

12839730 is a wasteful number, since it uses less digits than its factorization.

12839730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428001.

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

The square root of 12839730 is about 3583.2568984096. The cubic root of 12839730 is about 234.1631924668.

The spelling of 12839730 in words is "twelve million, eight hundred thirty-nine thousand, seven hundred thirty".