305210012 has 12 divisors (see below), whose sum is σ = 539303856. Its totient is φ = 151123200.

The previous prime is 305210011. The next prime is 305210039. The reversal of 305210012 is 210012503.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369989 + ... + 370812.

It is an arithmetic number, because the mean of its divisors is an integer number (44941988).

Almost surely, 2^305210012 is an apocalyptic number.

It is an amenable number.

305210012 is a deficient number, since it is larger than the sum of its proper divisors (234093844).

305210012 is a wasteful number, since it uses less digits than its factorization.

305210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740908 (or 740906 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 305210012 is about 17470.2607879791. The cubic root of 305210012 is about 673.2860123156.

Adding to 305210012 its reverse (210012503), we get a palindrome (515222515).

The spelling of 305210012 in words is "three hundred five million, two hundred ten thousand, twelve".