170428317 has 8 divisors (see below), whose sum is σ = 228873120. Its totient is φ = 112801200.

The previous prime is 170428303. The next prime is 170428319. The reversal of 170428317 is 713824071.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 170428317 - 2⁴ = 170428301 is a prime.

It is a super-2 number, since 2×170428317² = 58091622470904978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170428319) 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 7 ways as a sum of consecutive naturals, for example, 203934 + ... + 204767.

It is an arithmetic number, because the mean of its divisors is an integer number (28609140).

Almost surely, 2^170428317 is an apocalyptic number.

It is an amenable number.

170428317 is a deficient number, since it is larger than the sum of its proper divisors (58444803).

170428317 is a wasteful number, since it uses less digits than its factorization.

170428317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408843.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 170428317 is about 13054.8196846988. The cubic root of 170428317 is about 554.4306766329.

The spelling of 170428317 in words is "one hundred seventy million, four hundred twenty-eight thousand, three hundred seventeen".