228004 has 24 divisors (see below), whose sum is σ = 483840. Its totient is φ = 91776.

The previous prime is 227993. The next prime is 228013. The reversal of 228004 is 400822.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237 + ... + 715.

It is an arithmetic number, because the mean of its divisors is an integer number (20160).

2²²⁸⁰⁰⁴ 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 228004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241920).

228004 is an abundant number, since it is smaller than the sum of its proper divisors (255836).

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

228004 is a wasteful number, since it uses less digits than its factorization.

228004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 228004 is about 477.4976439732. The cubic root of 228004 is about 61.0915046990.

Adding to 228004 its reverse (400822), we get a palindrome (628826).

The spelling of 228004 in words is "two hundred twenty-eight thousand, four".