228389 has 12 divisors (see below), whose sum is σ = 273600. Its totient is φ = 190008.

The previous prime is 228383. The next prime is 228409. The reversal of 228389 is 983822.

It is a happy number.

It is not a de Polignac number, because 228389 - 2¹⁶ = 162853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2852 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (22800).

2²²⁸³⁸⁹ is an apocalyptic number.

It is an amenable number.

228389 is a deficient number, since it is larger than the sum of its proper divisors (45211).

228389 is an equidigital number, since it uses as much as digits as its factorization.

228389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 145 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 228389 is about 477.9006172836. The cubic root of 228389 is about 61.1258710598.

The spelling of 228389 in words is "two hundred twenty-eight thousand, three hundred eighty-nine".