228339 has 10 divisors (see below), whose sum is σ = 341220. Its totient is φ = 152172.

The previous prime is 228337. The next prime is 228341. The reversal of 228339 is 933822.

It is an interprime number because it is at equal distance from previous prime (228337) and next prime (228341).

It is not a de Polignac number, because 228339 - 2¹ = 228337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (228331) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1329 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (34122).

2²²⁸³³⁹ is an apocalyptic number.

228339 is a deficient number, since it is larger than the sum of its proper divisors (112881).

228339 is an equidigital number, since it uses as much as digits as its factorization.

228339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831 (or 2822 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 228339 is about 477.8483022885. The cubic root of 228339 is about 61.1214100794.

The spelling of 228339 in words is "two hundred twenty-eight thousand, three hundred thirty-nine".