228118433 has 2 divisors, whose sum is σ = 228118434. Its totient is φ = 228118432.

The previous prime is 228118421. The next prime is 228118459. The reversal of 228118433 is 334811822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133795489 + 94322944 = 11567^2 + 9712^2 .

It is a cyclic number.

It is not a de Polignac number, because 228118433 - 2⁶ = 228118369 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228118433.

It is not a weakly prime, because it can be changed into another prime (228118403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114059216 + 114059217.

It is an arithmetic number, because the mean of its divisors is an integer number (114059217).

Almost surely, 2^228118433 is an apocalyptic number.

It is an amenable number.

228118433 is a deficient number, since it is larger than the sum of its proper divisors (1).

228118433 is an equidigital number, since it uses as much as digits as its factorization.

228118433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 228118433 is about 15103.5900699138. The cubic root of 228118433 is about 611.0172340118.

The spelling of 228118433 in words is "two hundred twenty-eight million, one hundred eighteen thousand, four hundred thirty-three".