228539 has 2 divisors, whose sum is σ = 228540. Its totient is φ = 228538.

The previous prime is 228523. The next prime is 228559. The reversal of 228539 is 935822.

228539 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 228539 - 2⁴ = 228523 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (228509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114269 + 114270.

It is an arithmetic number, because the mean of its divisors is an integer number (114270).

2²²⁸⁵³⁹ is an apocalyptic number.

228539 is a deficient number, since it is larger than the sum of its proper divisors (1).

228539 is an equidigital number, since it uses as much as digits as its factorization.

228539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 228539 is about 478.0575279190. The cubic root of 228539 is about 61.1392500960.

It can be divided in two parts, 228 and 539, that added together give a palindrome (767).

The spelling of 228539 in words is "two hundred twenty-eight thousand, five hundred thirty-nine".