228868069 has 2 divisors, whose sum is σ = 228868070. Its totient is φ = 228868068.

The previous prime is 228868049. The next prime is 228868111. The reversal of 228868069 is 960868822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194937444 + 33930625 = 13962^2 + 5825^2 .

It is a cyclic number.

It is not a de Polignac number, because 228868069 - 2⁷ = 228867941 is a prime.

It is a super-2 number, since 2×228868069² = 104761186015577522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228868049) by changing a digit.

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 as a sum of consecutive naturals, namely, 114434034 + 114434035.

It is an arithmetic number, because the mean of its divisors is an integer number (114434035).

Almost surely, 2^228868069 is an apocalyptic number.

It is an amenable number.

228868069 is a deficient number, since it is larger than the sum of its proper divisors (1).

228868069 is an equidigital number, since it uses as much as digits as its factorization.

228868069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 228868069 is about 15128.3861994596. The cubic root of 228868069 is about 611.6858044121.

The spelling of 228868069 in words is "two hundred twenty-eight million, eight hundred sixty-eight thousand, sixty-nine".