170628 has 24 divisors (see below), whose sum is σ = 406560. Its totient is φ = 55680.

The previous prime is 170627. The next prime is 170633. The reversal of 170628 is 826071.

170628 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×170628² = 58227828768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 170598 and 170607.

It is not an unprimeable number, because it can be changed into a prime (170627) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 588 + ... + 828.

It is an arithmetic number, because the mean of its divisors is an integer number (16940).

2¹⁷⁰⁶²⁸ is an apocalyptic number.

It is an amenable number.

170628 is an abundant number, since it is smaller than the sum of its proper divisors (235932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

170628 is a wasteful number, since it uses less digits than its factorization.

170628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 170628 is about 413.0714223957. The cubic root of 170628 is about 55.4647125740.

Adding to 170628 its reverse (826071), we get a palindrome (996699).

The spelling of 170628 in words is "one hundred seventy thousand, six hundred twenty-eight".