30455228 has 24 divisors (see below), whose sum is σ = 56709072. Its totient is φ = 14261504.

The previous prime is 30455219. The next prime is 30455261. The reversal of 30455228 is 82255403.

It is a self number, because there is not a number n which added to its sum of digits gives 30455228.

It is a congruent number.

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, 14450 + ... + 16422.

It is an arithmetic number, because the mean of its divisors is an integer number (2362878).

Almost surely, 2^30455228 is an apocalyptic number.

It is an amenable number.

30455228 is a deficient number, since it is larger than the sum of its proper divisors (26253844).

30455228 is a wasteful number, since it uses less digits than its factorization.

30455228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2219 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 30455228 is about 5518.6255535233. The cubic root of 30455228 is about 312.2870331373.

The spelling of 30455228 in words is "thirty million, four hundred fifty-five thousand, two hundred twenty-eight".