228863 has 4 divisors (see below), whose sum is σ = 231840. Its totient is φ = 225888.

The previous prime is 228859. The next prime is 228869. The reversal of 228863 is 368822.

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 228863 - 2² = 228859 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (57960).

2²²⁸⁸⁶³ is an apocalyptic number.

228863 is a deficient number, since it is larger than the sum of its proper divisors (2977).

228863 is an equidigital number, since it uses as much as digits as its factorization.

228863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976.

The product of its digits is 4608, while the sum is 29.

The square root of 228863 is about 478.3962792497. The cubic root of 228863 is about 61.1681288480.

The spelling of 228863 in words is "two hundred twenty-eight thousand, eight hundred sixty-three".