170020 has 12 divisors (see below), whose sum is σ = 357084. Its totient is φ = 68000.

The previous prime is 170003. The next prime is 170021. The reversal of 170020 is 20071.

It can be written as a sum of positive squares in 2 ways, for example, as 34596 + 135424 = 186^2 + 368^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 169979 and 170006.

It is not an unprimeable number, because it can be changed into a prime (170021) 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, 4231 + ... + 4270.

It is an arithmetic number, because the mean of its divisors is an integer number (29757).

2¹⁷⁰⁰²⁰ is an apocalyptic number.

170020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170020 is an abundant number, since it is smaller than the sum of its proper divisors (187064).

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

170020 is a wasteful number, since it uses less digits than its factorization.

170020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8510 (or 8508 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 170020 is about 412.3348154110. The cubic root of 170020 is about 55.3987548974.

Adding to 170020 its reverse (20071), we get a palindrome (190091).

The spelling of 170020 in words is "one hundred seventy thousand, twenty", and thus it is an iban number.