228188 has 6 divisors (see below), whose sum is σ = 399336. Its totient is φ = 114092.

The previous prime is 228181. The next prime is 228197. The reversal of 228188 is 881822.

It is a self number, because there is not a number n which added to its sum of digits gives 228188.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28520 + ... + 28527.

It is an arithmetic number, because the mean of its divisors is an integer number (66556).

2²²⁸¹⁸⁸ is an apocalyptic number.

It is an amenable number.

228188 is a deficient number, since it is larger than the sum of its proper divisors (171148).

228188 is a wasteful number, since it uses less digits than its factorization.

228188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57051 (or 57049 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 228188 is about 477.6902762251. The cubic root of 228188 is about 61.1079339640.

The spelling of 228188 in words is "two hundred twenty-eight thousand, one hundred eighty-eight".