12289706 has 32 divisors (see below), whose sum is σ = 21930048. Its totient is φ = 5091840.

The previous prime is 12289687. The next prime is 12289757. The reversal of 12289706 is 60798221.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 27521 + ... + 27963.

It is an arithmetic number, because the mean of its divisors is an integer number (685314).

Almost surely, 2^12289706 is an apocalyptic number.

12289706 is a deficient number, since it is larger than the sum of its proper divisors (9640342).

12289706 is a wasteful number, since it uses less digits than its factorization.

12289706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 12289706 is about 3505.6676967448. The cubic root of 12289706 is about 230.7706099120.

The spelling of 12289706 in words is "twelve million, two hundred eighty-nine thousand, seven hundred six".