228838 has 4 divisors (see below), whose sum is σ = 343260. Its totient is φ = 114418.

The previous prime is 228829. The next prime is 228841. The reversal of 228838 is 838822.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 57208 + ... + 57211.

It is an arithmetic number, because the mean of its divisors is an integer number (85815).

2²²⁸⁸³⁸ is an apocalyptic number.

228838 is a deficient number, since it is larger than the sum of its proper divisors (114422).

228838 is a wasteful number, since it uses less digits than its factorization.

228838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114421.

The product of its digits is 6144, while the sum is 31.

The square root of 228838 is about 478.3701495704. The cubic root of 228838 is about 61.1659015200.

The spelling of 228838 in words is "two hundred twenty-eight thousand, eight hundred thirty-eight".