228771 has 16 divisors (see below), whose sum is σ = 349600. Its totient is φ = 147744.

The previous prime is 228757. The next prime is 228773. The reversal of 228771 is 177822.

It is not a de Polignac number, because 228771 - 2⁶ = 228707 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (21850).

2²²⁸⁷⁷¹ is an apocalyptic number.

228771 is a deficient number, since it is larger than the sum of its proper divisors (120829).

228771 is a wasteful number, since it uses less digits than its factorization.

228771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275 (or 269 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 228771 is about 478.3001149906. The cubic root of 228771 is about 61.1599314809.

It can be divided in two parts, 228 and 771, that added together give a palindrome (999).

The spelling of 228771 in words is "two hundred twenty-eight thousand, seven hundred seventy-one".