228612 has 12 divisors (see below), whose sum is σ = 533456. Its totient is φ = 76200.

The previous prime is 228611. The next prime is 228617. The reversal of 228612 is 216822.

228612 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (228611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9514 + ... + 9537.

2²²⁸⁶¹² is an apocalyptic number.

It is an amenable number.

228612 is an abundant number, since it is smaller than the sum of its proper divisors (304844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228612 is a wasteful number, since it uses less digits than its factorization.

228612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19058 (or 19056 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 228612 is about 478.1338724667. The cubic root of 228612 is about 61.1457591093.

The spelling of 228612 in words is "two hundred twenty-eight thousand, six hundred twelve".