228912 has 40 divisors (see below), whose sum is σ = 624960. Its totient is φ = 72000.

The previous prime is 228911. The next prime is 228913. The reversal of 228912 is 219822.

It is an interprime number because it is at equal distance from previous prime (228911) and next prime (228913).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (228911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 787 + ... + 1037.

It is an arithmetic number, because the mean of its divisors is an integer number (15624).

2²²⁸⁹¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312480).

228912 is an abundant number, since it is smaller than the sum of its proper divisors (396048).

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

228912 is a wasteful number, since it uses less digits than its factorization.

228912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 275 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 228912 is about 478.4474892817. The cubic root of 228912 is about 61.1724939404.

It can be divided in two parts, 228 and 912, that multiplied together give a square (207936 = 456²).

The spelling of 228912 in words is "two hundred twenty-eight thousand, nine hundred twelve".