228646 has 16 divisors (see below), whose sum is σ = 394560. Its totient is φ = 98280.

The previous prime is 228637. The next prime is 228647. The reversal of 228646 is 646822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145 + ... + 691.

It is an arithmetic number, because the mean of its divisors is an integer number (24660).

2²²⁸⁶⁴⁶ is an apocalyptic number.

228646 is a deficient number, since it is larger than the sum of its proper divisors (165914).

228646 is a wasteful number, since it uses less digits than its factorization.

228646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 4608, while the sum is 28.

The square root of 228646 is about 478.1694260406. The cubic root of 228646 is about 61.1487902315.

It can be divided in two parts, 2286 and 46, that added together give a palindrome (2332).

The spelling of 228646 in words is "two hundred twenty-eight thousand, six hundred forty-six".