228708133 has 2 divisors, whose sum is σ = 228708134. Its totient is φ = 228708132.

The previous prime is 228708119. The next prime is 228708199. The reversal of 228708133 is 331807822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204432804 + 24275329 = 14298^2 + 4927^2 .

It is a cyclic number.

It is not a de Polignac number, because 228708133 - 2⁹ = 228707621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228705133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114354066 + 114354067.

It is an arithmetic number, because the mean of its divisors is an integer number (114354067).

Almost surely, 2^228708133 is an apocalyptic number.

It is an amenable number.

228708133 is a deficient number, since it is larger than the sum of its proper divisors (1).

228708133 is an equidigital number, since it uses as much as digits as its factorization.

228708133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 228708133 is about 15123.0993185921. The cubic root of 228708133 is about 611.5432865290.

The spelling of 228708133 in words is "two hundred twenty-eight million, seven hundred eight thousand, one hundred thirty-three".