30708228 has 24 divisors (see below), whose sum is σ = 73964800. Its totient is φ = 9905760.

The previous prime is 30708217. The next prime is 30708241. The reversal of 30708228 is 82280703.

It is a junction number, because it is equal to n+sod(n) for n = 30708195 and 30708204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40903 + ... + 41646.

Almost surely, 2^30708228 is an apocalyptic number.

It is an amenable number.

30708228 is an abundant number, since it is smaller than the sum of its proper divisors (43256572).

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

30708228 is a wasteful number, since it uses less digits than its factorization.

30708228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82587 (or 82585 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30708228 is about 5541.5005188126. The cubic root of 30708228 is about 313.1494011287.

The spelling of 30708228 in words is "thirty million, seven hundred eight thousand, two hundred twenty-eight".