178228 has 12 divisors (see below), whose sum is σ = 330372. Its totient is φ = 83840.

The previous prime is 178223. The next prime is 178231. The reversal of 178228 is 822871.

It can be written as a sum of positive squares in 2 ways, for example, as 142884 + 35344 = 378^2 + 188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 178196 and 178205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (178223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243 + ... + 1378.

It is an arithmetic number, because the mean of its divisors is an integer number (27531).

2¹⁷⁸²²⁸ is an apocalyptic number.

It is an amenable number.

178228 is a deficient number, since it is larger than the sum of its proper divisors (152144).

178228 is a wasteful number, since it uses less digits than its factorization.

178228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642 (or 2640 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 178228 is about 422.1705816373. The cubic root of 178228 is about 56.2762708562.

It can be divided in two parts, 178 and 228, that added together give a triangular number (406 = T₂₈).

The spelling of 178228 in words is "one hundred seventy-eight thousand, two hundred twenty-eight".