228164 has 6 divisors (see below), whose sum is σ = 399294. Its totient is φ = 114080.

The previous prime is 228139. The next prime is 228181. The reversal of 228164 is 461822.

It can be written as a sum of positive squares in only one way, i.e., 184900 + 43264 = 430^2 + 208^2 .

It is an unprimeable number.

228164 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 as a sum of consecutive naturals, namely, 28517 + ... + 28524.

It is an arithmetic number, because the mean of its divisors is an integer number (66549).

2²²⁸¹⁶⁴ is an apocalyptic number.

It is an amenable number.

228164 is a deficient number, since it is larger than the sum of its proper divisors (171130).

228164 is a wasteful number, since it uses less digits than its factorization.

228164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57045 (or 57043 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 228164 is about 477.6651546847. The cubic root of 228164 is about 61.1057915174.

Adding to 228164 its reverse (461822), we get a palindrome (689986).

The spelling of 228164 in words is "two hundred twenty-eight thousand, one hundred sixty-four".