12628039 has 4 divisors (see below), whose sum is σ = 12703824. Its totient is φ = 12552256.

The previous prime is 12628019. The next prime is 12628069. The reversal of 12628039 is 93082621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93082621 = 109 ⋅853969.

It is a cyclic number.

It is not a de Polignac number, because 12628039 - 2⁷ = 12627911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12628039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37642 + ... + 37975.

It is an arithmetic number, because the mean of its divisors is an integer number (3175956).

Almost surely, 2^12628039 is an apocalyptic number.

12628039 is a deficient number, since it is larger than the sum of its proper divisors (75785).

12628039 is an equidigital number, since it uses as much as digits as its factorization.

12628039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75784.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12628039 is about 3553.5952217437. The cubic root of 12628039 is about 232.8691572601.

The spelling of 12628039 in words is "twelve million, six hundred twenty-eight thousand, thirty-nine".