228818 has 8 divisors (see below), whose sum is σ = 345600. Its totient is φ = 113620.

The previous prime is 228799. The next prime is 228829. The reversal of 228818 is 818822.

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

It is a congruent number.

It is an unprimeable number.

228818 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2²²⁸⁸¹⁸ is an apocalyptic number.

228818 is a deficient number, since it is larger than the sum of its proper divisors (116782).

228818 is a wasteful number, since it uses less digits than its factorization.

228818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its digits is 2048, while the sum is 29.

The square root of 228818 is about 478.3492447992. The cubic root of 228818 is about 61.1641195408.

The spelling of 228818 in words is "two hundred twenty-eight thousand, eight hundred eighteen".