228030945 has 16 divisors (see below), whose sum is σ = 386311680. Its totient is φ = 114462464.

The previous prime is 228030937. The next prime is 228030961. The reversal of 228030945 is 549030822.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 228030945 - 2³ = 228030937 is a prime.

It is a super-2 number, since 2×228030945² = 103996223755186050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446865 + ... + 447374.

It is an arithmetic number, because the mean of its divisors is an integer number (24144480).

Almost surely, 2^228030945 is an apocalyptic number.

It is an amenable number.

228030945 is a deficient number, since it is larger than the sum of its proper divisors (158280735).

228030945 is a wasteful number, since it uses less digits than its factorization.

228030945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894264.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 228030945 is about 15100.6935271199. The cubic root of 228030945 is about 610.9391115640.

The spelling of 228030945 in words is "two hundred twenty-eight million, thirty thousand, nine hundred forty-five".