228667 has 4 divisors (see below), whose sum is σ = 242136. Its totient is φ = 215200.

The previous prime is 228647. The next prime is 228677. The reversal of 228667 is 766822.

It is a happy number.

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 228667 - 2⁷ = 228539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (228617) 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, 6709 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (60534).

2²²⁸⁶⁶⁷ is an apocalyptic number.

228667 is a deficient number, since it is larger than the sum of its proper divisors (13469).

228667 is a wasteful number, since it uses less digits than its factorization.

228667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13468.

The product of its digits is 8064, while the sum is 31.

The square root of 228667 is about 478.1913842804. The cubic root of 228667 is about 61.1506622451.

It can be divided in two parts, 228 and 667, that multiplied together give a triangular number (152076 = T₅₅₁).

The spelling of 228667 in words is "two hundred twenty-eight thousand, six hundred sixty-seven".