850172 has 12 divisors (see below), whose sum is σ = 1552656. Its totient is φ = 406560.

The previous prime is 850147. The next prime is 850177. The reversal of 850172 is 271058.

850172 is nontrivially palindromic in base 16.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 850172.

It is not an unprimeable number, because it can be changed into a prime (850177) by changing a digit.

850172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 4529 + ... + 4712.

It is an arithmetic number, because the mean of its divisors is an integer number (129388).

2⁸⁵⁰¹⁷² is an apocalyptic number.

It is an amenable number.

850172 is a deficient number, since it is larger than the sum of its proper divisors (702484).

850172 is a wasteful number, since it uses less digits than its factorization.

850172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268 (or 9266 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 850172 is about 922.0477211078. The cubic root of 850172 is about 94.7332127048.

The spelling of 850172 in words is "eight hundred fifty thousand, one hundred seventy-two".