172344 has 32 divisors (see below), whose sum is σ = 443520. Its totient is φ = 55776.

The previous prime is 172343. The next prime is 172351. The reversal of 172344 is 443271.

It is a self number, because there is not a number n which added to its sum of digits gives 172344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949 + ... + 1115.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2¹⁷²³⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221760).

172344 is an abundant number, since it is smaller than the sum of its proper divisors (271176).

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

172344 is a wasteful number, since it uses less digits than its factorization.

172344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 215 counting only the distinct ones).

The product of its digits is 672, while the sum is 21.

The square root of 172344 is about 415.1433487363. The cubic root of 172344 is about 55.6500282942.

The spelling of 172344 in words is "one hundred seventy-two thousand, three hundred forty-four", and thus it is an iban number.