170972 has 6 divisors (see below), whose sum is σ = 299208. Its totient is φ = 85484.

The previous prime is 170971. The next prime is 171007. The reversal of 170972 is 279071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21368 + ... + 21375.

It is an arithmetic number, because the mean of its divisors is an integer number (49868).

2¹⁷⁰⁹⁷² is an apocalyptic number.

It is an amenable number.

170972 is a deficient number, since it is larger than the sum of its proper divisors (128236).

170972 is a wasteful number, since it uses less digits than its factorization.

170972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42747 (or 42745 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 170972 is about 413.4876056184. The cubic root of 170972 is about 55.5019613516.

The spelling of 170972 in words is "one hundred seventy thousand, nine hundred seventy-two".