228958 has 4 divisors (see below), whose sum is σ = 343440. Its totient is φ = 114478.

The previous prime is 228953. The next prime is 228959. The reversal of 228958 is 859822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 859822 = 2 ⋅429911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228953) by changing a digit.

228958 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 57238 + ... + 57241.

It is an arithmetic number, because the mean of its divisors is an integer number (85860).

2²²⁸⁹⁵⁸ is an apocalyptic number.

228958 is a deficient number, since it is larger than the sum of its proper divisors (114482).

228958 is a wasteful number, since it uses less digits than its factorization.

228958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114481.

The product of its digits is 11520, while the sum is 34.

The square root of 228958 is about 478.4955590181. The cubic root of 228958 is about 61.1765912154.

The spelling of 228958 in words is "two hundred twenty-eight thousand, nine hundred fifty-eight".