170065728 has 84 divisors (see below), whose sum is σ = 557113440. Its totient is φ = 48589056.

The previous prime is 170065723. The next prime is 170065759. The reversal of 170065728 is 827560071.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 170065692 and 170065701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170065723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17058 + ... + 25121.

Almost surely, 2^170065728 is an apocalyptic number.

170065728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

170065728 is an abundant number, since it is smaller than the sum of its proper divisors (387047712).

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

170065728 is a wasteful number, since it uses less digits than its factorization.

170065728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42204 (or 42191 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 170065728 is about 13040.9251205580. The cubic root of 170065728 is about 554.0372107229.

The spelling of 170065728 in words is "one hundred seventy million, sixty-five thousand, seven hundred twenty-eight".