12309066 has 96 divisors (see below), whose sum is σ = 33965568. Its totient is φ = 3129120.

The previous prime is 12309053. The next prime is 12309083. The reversal of 12309066 is 66090321.

It is a happy 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 47 ways as a sum of consecutive naturals, for example, 114985 + ... + 115091.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

Almost surely, 2^12309066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12309066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16982784).

12309066 is an abundant number, since it is smaller than the sum of its proper divisors (21656502).

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

12309066 is a wasteful number, since it uses less digits than its factorization.

12309066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 12309066 is about 3508.4278530419. The cubic root of 12309066 is about 230.8917241479.

Adding to 12309066 its reverse (66090321), we get a palindrome (78399387).

It can be divided in two parts, 1230 and 9066, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 12309066 in words is "twelve million, three hundred nine thousand, sixty-six".