228763 has 4 divisors (see below), whose sum is σ = 231088. Its totient is φ = 226440.

The previous prime is 228757. The next prime is 228773. The reversal of 228763 is 367822.

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 228763 - 2⁵ = 228731 is a prime.

It is a Duffinian number.

228763 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (228713) 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 3 ways as a sum of consecutive naturals, for example, 1008 + ... + 1213.

It is an arithmetic number, because the mean of its divisors is an integer number (57772).

2²²⁸⁷⁶³ is an apocalyptic number.

228763 is a deficient number, since it is larger than the sum of its proper divisors (2325).

228763 is a wasteful number, since it uses less digits than its factorization.

228763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its digits is 4032, while the sum is 28.

The square root of 228763 is about 478.2917519674. The cubic root of 228763 is about 61.1592185625.

The spelling of 228763 in words is "two hundred twenty-eight thousand, seven hundred sixty-three".