30512228 has 12 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 15236712.

The previous prime is 30512221. The next prime is 30512231. The reversal of 30512228 is 82221503.

It is not an unprimeable number, because it can be changed into a prime (30512221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968 + ... + 7871.

It is an arithmetic number, because the mean of its divisors is an integer number (4455360).

Almost surely, 2^30512228 is an apocalyptic number.

It is an amenable number.

30512228 is a deficient number, since it is larger than the sum of its proper divisors (22952092).

30512228 is a wasteful number, since it uses less digits than its factorization.

30512228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706 (or 9704 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 30512228 is about 5523.7874687573. The cubic root of 30512228 is about 312.4817371727.

The spelling of 30512228 in words is "thirty million, five hundred twelve thousand, two hundred twenty-eight".