228871 has 4 divisors (see below), whose sum is σ = 242352. Its totient is φ = 215392.

The previous prime is 228869. The next prime is 228881. The reversal of 228871 is 178822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228871 - 2¹ = 228869 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6715 + ... + 6748.

It is an arithmetic number, because the mean of its divisors is an integer number (60588).

2²²⁸⁸⁷¹ is an apocalyptic number.

228871 is a deficient number, since it is larger than the sum of its proper divisors (13481).

228871 is a wasteful number, since it uses less digits than its factorization.

228871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13480.

The product of its digits is 1792, while the sum is 28.

The square root of 228871 is about 478.4046404457. The cubic root of 228871 is about 61.1688415587.

The spelling of 228871 in words is "two hundred twenty-eight thousand, eight hundred seventy-one".