170220029 has 4 divisors (see below), whose sum is σ = 194537184. Its totient is φ = 145902876.

The previous prime is 170219989. The next prime is 170220049. The reversal of 170220029 is 920022071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-170220029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 170219986 and 170220013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170220049) 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, 12158567 + ... + 12158580.

It is an arithmetic number, because the mean of its divisors is an integer number (48634296).

Almost surely, 2^170220029 is an apocalyptic number.

It is an amenable number.

170220029 is a deficient number, since it is larger than the sum of its proper divisors (24317155).

170220029 is an equidigital number, since it uses as much as digits as its factorization.

170220029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24317154.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 170220029 is about 13046.8398089346. The cubic root of 170220029 is about 554.2047197894.

The spelling of 170220029 in words is "one hundred seventy million, two hundred twenty thousand, twenty-nine".