228238 has 8 divisors (see below), whose sum is σ = 345240. Its totient is φ = 113160.

The previous prime is 228233. The next prime is 228251. The reversal of 228238 is 832822.

228238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228233) by changing a digit.

228238 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, 133 + ... + 688.

It is an arithmetic number, because the mean of its divisors is an integer number (43155).

2²²⁸²³⁸ is an apocalyptic number.

228238 is a deficient number, since it is larger than the sum of its proper divisors (117002).

228238 is a wasteful number, since it uses less digits than its factorization.

228238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962.

The product of its digits is 1536, while the sum is 25.

The square root of 228238 is about 477.7426085247. The cubic root of 228238 is about 61.1123969120.

The spelling of 228238 in words is "two hundred twenty-eight thousand, two hundred thirty-eight".