228891 has 8 divisors (see below), whose sum is σ = 328720. Its totient is φ = 140832.

The previous prime is 228887. The next prime is 228901. The reversal of 228891 is 198822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228891 - 2² = 228887 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2896 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (41090).

2²²⁸⁸⁹¹ is an apocalyptic number.

228891 is a deficient number, since it is larger than the sum of its proper divisors (99829).

228891 is a wasteful number, since it uses less digits than its factorization.

228891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5885.

The product of its digits is 2304, while the sum is 30.

The square root of 228891 is about 478.4255427964. The cubic root of 228891 is about 61.1706232628.

The spelling of 228891 in words is "two hundred twenty-eight thousand, eight hundred ninety-one".