228812 has 6 divisors (see below), whose sum is σ = 400428. Its totient is φ = 114404.

The previous prime is 228799. The next prime is 228829. The reversal of 228812 is 218822.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 228812.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28598 + ... + 28605.

It is an arithmetic number, because the mean of its divisors is an integer number (66738).

2²²⁸⁸¹² is an apocalyptic number.

It is an amenable number.

228812 is a deficient number, since it is larger than the sum of its proper divisors (171616).

228812 is a wasteful number, since it uses less digits than its factorization.

228812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57207 (or 57205 counting only the distinct ones).

The product of its digits is 512, while the sum is 23.

The square root of 228812 is about 478.3429731897. The cubic root of 228812 is about 61.1635849267.

It can be divided in two parts, 228 and 812, that multiplied together give a triangular number (185136 = T₆₀₈).

The spelling of 228812 in words is "two hundred twenty-eight thousand, eight hundred twelve".