30328228 has 12 divisors (see below), whose sum is σ = 60656512. Its totient is φ = 12997800.

The previous prime is 30328219. The next prime is 30328231. The reversal of 30328228 is 82282303.

30328228 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1083151 = 30328228 / (3 + 0 + 3 + 2 + 8 + 2 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 30328196 and 30328205.

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 3 ways as a sum of consecutive naturals, for example, 541548 + ... + 541603.

Almost surely, 2^30328228 is an apocalyptic number.

It is an amenable number.

30328228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30328228 is a wasteful number, since it uses less digits than its factorization.

30328228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083162 (or 1083160 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 30328228 is about 5507.1070445380. The cubic root of 30328228 is about 311.8523435656.

The spelling of 30328228 in words is "thirty million, three hundred twenty-eight thousand, two hundred twenty-eight".