30228628 has 6 divisors (see below), whose sum is σ = 52900106. Its totient is φ = 15114312.

The previous prime is 30228607. The next prime is 30228637. The reversal of 30228628 is 82682203.

It can be written as a sum of positive squares in only one way, i.e., 30162064 + 66564 = 5492^2 + 258^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30228628.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3778575 + ... + 3778582.

Almost surely, 2^30228628 is an apocalyptic number.

It is an amenable number.

30228628 is a deficient number, since it is larger than the sum of its proper divisors (22671478).

30228628 is a wasteful number, since it uses less digits than its factorization.

30228628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557161 (or 7557159 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 30228628 is about 5498.0567476155. The cubic root of 30228628 is about 311.5105876147.

The spelling of 30228628 in words is "thirty million, two hundred twenty-eight thousand, six hundred twenty-eight".