12739830 has 16 divisors (see below), whose sum is σ = 30575664. Its totient is φ = 3397280.

The previous prime is 12739819. The next prime is 12739841. The reversal of 12739830 is 3893721.

12739830 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 (12739819) and next prime (12739841).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12739791 and 12739800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212301 + ... + 212360.

It is an arithmetic number, because the mean of its divisors is an integer number (1910979).

Almost surely, 2^12739830 is an apocalyptic number.

12739830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12739830 is an abundant number, since it is smaller than the sum of its proper divisors (17835834).

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

12739830 is a wasteful number, since it uses less digits than its factorization.

12739830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424671.

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

The square root of 12739830 is about 3569.2898453334. The cubic root of 12739830 is about 233.5543054075.

The spelling of 12739830 in words is "twelve million, seven hundred thirty-nine thousand, eight hundred thirty".