228336289 has 2 divisors, whose sum is σ = 228336290. Its totient is φ = 228336288.

The previous prime is 228336253. The next prime is 228336323. The reversal of 228336289 is 982633822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225750625 + 2585664 = 15025^2 + 1608^2 .

It is a cyclic number.

It is not a de Polignac number, because 228336289 - 2⁷ = 228336161 is a prime.

It is not a weakly prime, because it can be changed into another prime (228336209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114168144 + 114168145.

It is an arithmetic number, because the mean of its divisors is an integer number (114168145).

Almost surely, 2^228336289 is an apocalyptic number.

It is an amenable number.

228336289 is a deficient number, since it is larger than the sum of its proper divisors (1).

228336289 is an equidigital number, since it uses as much as digits as its factorization.

228336289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 228336289 is about 15110.8004089790. The cubic root of 228336289 is about 611.2116818638.

The spelling of 228336289 in words is "two hundred twenty-eight million, three hundred thirty-six thousand, two hundred eighty-nine".