306339228 has 36 divisors (see below), whose sum is σ = 833924728. Its totient is φ = 94258080.

The previous prime is 306339221. The next prime is 306339239. The reversal of 306339228 is 822933603.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×306339228² = 187687445223271968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 306339192 and 306339201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306339221) 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 11 ways as a sum of consecutive naturals, for example, 326818 + ... + 327753.

Almost surely, 2^306339228 is an apocalyptic number.

It is an amenable number.

306339228 is an abundant number, since it is smaller than the sum of its proper divisors (527585500).

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

306339228 is a wasteful number, since it uses less digits than its factorization.

306339228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654594 (or 654589 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 306339228 is about 17502.5491857615. The cubic root of 306339228 is about 674.1153315775.

The spelling of 306339228 in words is "three hundred six million, three hundred thirty-nine thousand, two hundred twenty-eight".