12789205 has 32 divisors (see below), whose sum is σ = 18643968. Its totient is φ = 8294400.

The previous prime is 12789197. The next prime is 12789209. The reversal of 12789205 is 50298721.

12789205 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12789205 - 2³ = 12789197 is a prime.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12789209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21877 + ... + 22453.

It is an arithmetic number, because the mean of its divisors is an integer number (582624).

Almost surely, 2^12789205 is an apocalyptic number.

It is an amenable number.

12789205 is a deficient number, since it is larger than the sum of its proper divisors (5854763).

12789205 is a wasteful number, since it uses less digits than its factorization.

12789205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 12789205 is about 3576.1997986690. The cubic root of 12789205 is about 233.8556406214.

The spelling of 12789205 in words is "twelve million, seven hundred eighty-nine thousand, two hundred five".