228789 has 12 divisors (see below), whose sum is σ = 360672. Its totient is φ = 138600.

The previous prime is 228773. The next prime is 228793. The reversal of 228789 is 987822.

It is not a de Polignac number, because 228789 - 2⁴ = 228773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228799) 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 in 11 ways as a sum of consecutive naturals, for example, 1057 + ... + 1254.

It is an arithmetic number, because the mean of its divisors is an integer number (30056).

2²²⁸⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

228789 is a deficient number, since it is larger than the sum of its proper divisors (131883).

228789 is a wasteful number, since it uses less digits than its factorization.

228789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2325 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 228789 is about 478.3189312582. The cubic root of 228789 is about 61.1615354865.

The spelling of 228789 in words is "two hundred twenty-eight thousand, seven hundred eighty-nine".