30620228 has 6 divisors (see below), whose sum is σ = 53585406. Its totient is φ = 15310112.

The previous prime is 30620209. The next prime is 30620237. The reversal of 30620228 is 82202603.

It can be written as a sum of positive squares in only one way, i.e., 25321024 + 5299204 = 5032^2 + 2302^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3827525 + ... + 3827532.

It is an arithmetic number, because the mean of its divisors is an integer number (8930901).

Almost surely, 2^30620228 is an apocalyptic number.

It is an amenable number.

30620228 is a deficient number, since it is larger than the sum of its proper divisors (22965178).

30620228 is a wasteful number, since it uses less digits than its factorization.

30620228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655061 (or 7655059 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 30620228 is about 5533.5547345264. The cubic root of 30620228 is about 312.8499861248.

The spelling of 30620228 in words is "thirty million, six hundred twenty thousand, two hundred twenty-eight".