228386 has 4 divisors (see below), whose sum is σ = 342582. Its totient is φ = 114192.

The previous prime is 228383. The next prime is 228409. The reversal of 228386 is 683822.

228386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 683822 = 2 ⋅341911.

It can be written as a sum of positive squares in only one way, i.e., 156025 + 72361 = 395^2 + 269^2 .

It is not an unprimeable number, because it can be changed into a prime (228383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57095 + ... + 57098.

2²²⁸³⁸⁶ is an apocalyptic number.

228386 is a deficient number, since it is larger than the sum of its proper divisors (114196).

228386 is a wasteful number, since it uses less digits than its factorization.

228386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114195.

The product of its digits is 4608, while the sum is 29.

The square root of 228386 is about 477.8974785453. The cubic root of 228386 is about 61.1256034194.

The spelling of 228386 in words is "two hundred twenty-eight thousand, three hundred eighty-six".