169228 has 6 divisors (see below), whose sum is σ = 296156. Its totient is φ = 84612.

The previous prime is 169219. The next prime is 169241. The reversal of 169228 is 822961.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 169196 and 169205.

It is an unprimeable number.

169228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21150 + ... + 21157.

2¹⁶⁹²²⁸ is an apocalyptic number.

It is an amenable number.

169228 is a deficient number, since it is larger than the sum of its proper divisors (126928).

169228 is a wasteful number, since it uses less digits than its factorization.

169228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42311 (or 42309 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 169228 is about 411.3733097808. The cubic root of 169228 is about 55.3126000934.

The spelling of 169228 in words is "one hundred sixty-nine thousand, two hundred twenty-eight".