306918228 has 24 divisors (see below), whose sum is σ = 739244800. Its totient is φ = 99005760.

The previous prime is 306918211. The next prime is 306918257. The reversal of 306918228 is 822819603.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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, 412153 + ... + 412896.

Almost surely, 2^306918228 is an apocalyptic number.

It is an amenable number.

306918228 is an abundant number, since it is smaller than the sum of its proper divisors (432326572).

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

306918228 is a wasteful number, since it uses less digits than its factorization.

306918228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825087 (or 825085 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 306918228 is about 17519.0818252556. The cubic root of 306918228 is about 674.5397707766.

The spelling of 306918228 in words is "three hundred six million, nine hundred eighteen thousand, two hundred twenty-eight".