30306212 has 12 divisors (see below), whose sum is σ = 53174940. Its totient is φ = 15113376.

The previous prime is 30306209. The next prime is 30306233. The reversal of 30306212 is 21260303.

It can be written as a sum of positive squares in 2 ways, for example, as 14258176 + 16048036 = 3776^2 + 4006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8183 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (4431245).

Almost surely, 2^30306212 is an apocalyptic number.

It is an amenable number.

30306212 is a deficient number, since it is larger than the sum of its proper divisors (22868728).

30306212 is a wasteful number, since it uses less digits than its factorization.

30306212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19870 (or 19868 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 30306212 is about 5505.1078100252. The cubic root of 30306212 is about 311.7768648927.

Adding to 30306212 its reverse (21260303), we get a palindrome (51566515).

The spelling of 30306212 in words is "thirty million, three hundred six thousand, two hundred twelve".