228170 has 8 divisors (see below), whose sum is σ = 410724. Its totient is φ = 91264.

The previous prime is 228139. The next prime is 228181. The reversal of 228170 is 71822.

It can be written as a sum of positive squares in 2 ways, for example, as 208849 + 19321 = 457^2 + 139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

228170 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11399 + ... + 11418.

2²²⁸¹⁷⁰ is an apocalyptic number.

228170 is a deficient number, since it is larger than the sum of its proper divisors (182554).

228170 is a wasteful number, since it uses less digits than its factorization.

228170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22824.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 228170 is about 477.6714351937. The cubic root of 228170 is about 61.1063271431.

Subtracting from 228170 its sum of digits (20), we obtain a triangular number (228150 = T₆₇₅).

Adding to 228170 its reverse (71822), we get a palindrome (299992).

It can be divided in two parts, 22 and 8170, that added together give a 13-th power (8192 = 2¹³).

The spelling of 228170 in words is "two hundred twenty-eight thousand, one hundred seventy".