305422212 has 12 divisors (see below), whose sum is σ = 712651856. Its totient is φ = 101807400.

The previous prime is 305422211. The next prime is 305422213. The reversal of 305422212 is 212224503.

It is an interprime number because it is at equal distance from previous prime (305422211) and next prime (305422213).

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (305422211) 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 3 ways as a sum of consecutive naturals, for example, 12725914 + ... + 12725937.

Almost surely, 2^305422212 is an apocalyptic number.

It is an amenable number.

305422212 is an abundant number, since it is smaller than the sum of its proper divisors (407229644).

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

305422212 is a wasteful number, since it uses less digits than its factorization.

305422212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25451858 (or 25451856 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 305422212 is about 17476.3329105393. The cubic root of 305422212 is about 673.4420122153.

Adding to 305422212 its reverse (212224503), we get a palindrome (517646715).

The spelling of 305422212 in words is "three hundred five million, four hundred twenty-two thousand, two hundred twelve".