170220020 has 12 divisors (see below), whose sum is σ = 357462084. Its totient is φ = 68088000.

The previous prime is 170219989. The next prime is 170220049. The reversal of 170220020 is 20022071.

170220020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 63138916 + 107081104 = 7946^2 + 10348^2 .

It is a junction number, because it is equal to n+sod(n) for n = 170219977 and 170220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4255481 + ... + 4255520.

It is an arithmetic number, because the mean of its divisors is an integer number (29788507).

Almost surely, 2^170220020 is an apocalyptic number.

170220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

170220020 is an abundant number, since it is smaller than the sum of its proper divisors (187242064).

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

170220020 is a wasteful number, since it uses less digits than its factorization.

170220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8511010 (or 8511008 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 170220020 is about 13046.8394640235. The cubic root of 170220020 is about 554.2047100220.

Adding to 170220020 its reverse (20022071), we get a palindrome (190242091).

The spelling of 170220020 in words is "one hundred seventy million, two hundred twenty thousand, twenty".