228704 has 24 divisors (see below), whose sum is σ = 515088. Its totient is φ = 97920.

The previous prime is 228677. The next prime is 228707. The reversal of 228704 is 407822.

It is a self number, because there is not a number n which added to its sum of digits gives 228704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228707) by changing a digit.

228704 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287 + ... + 734.

It is an arithmetic number, because the mean of its divisors is an integer number (21462).

2²²⁸⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

228704 is an abundant number, since it is smaller than the sum of its proper divisors (286384).

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

228704 is a wasteful number, since it uses less digits than its factorization.

228704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 228704 is about 478.2300701545. The cubic root of 228704 is about 61.1539602760.

The spelling of 228704 in words is "two hundred twenty-eight thousand, seven hundred four".