12270306 has 32 divisors (see below), whose sum is σ = 25683840. Its totient is φ = 3902976.

The previous prime is 12270301. The next prime is 12270317. The reversal of 12270306 is 60307221.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12270301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16515 + ... + 17241.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^12270306 is an apocalyptic number.

12270306 is an abundant number, since it is smaller than the sum of its proper divisors (13413534).

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

12270306 is a wasteful number, since it uses less digits than its factorization.

12270306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 12270306 is about 3502.8996559993. The cubic root of 12270306 is about 230.6491177839.

Adding to 12270306 its reverse (60307221), we get a palindrome (72577527).

The spelling of 12270306 in words is "twelve million, two hundred seventy thousand, three hundred six".