306120012 has 24 divisors (see below), whose sum is σ = 779214912. Its totient is φ = 92763600.

The previous prime is 306120011. The next prime is 306120047. The reversal of 306120012 is 210021603.

It is a junction number, because it is equal to n+sod(n) for n = 306119973 and 306120000.

It is not an unprimeable number, because it can be changed into a prime (306120011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1159414 + ... + 1159677.

It is an arithmetic number, because the mean of its divisors is an integer number (32467288).

Almost surely, 2^306120012 is an apocalyptic number.

It is an amenable number.

306120012 is an abundant number, since it is smaller than the sum of its proper divisors (473094900).

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

306120012 is a wasteful number, since it uses less digits than its factorization.

306120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319109 (or 2319107 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 306120012 is about 17496.2856629629. The cubic root of 306120012 is about 673.9544944872.

Adding to 306120012 its reverse (210021603), we get a palindrome (516141615).

The spelling of 306120012 in words is "three hundred six million, one hundred twenty thousand, twelve".