It is a zygodrome in base 4.
It is a congruent number.
2172272 is an apocalyptic number.
172272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 172272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230888).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
172272 is a wasteful number, since it uses less digits than its factorization.
172272 is an odious number, because the sum of its binary digits is odd.
The square root of 172272 is about 415.0566226432. The cubic root of 172272 is about 55.6422775938.
Subtracting 172272 from its reverse (272271), we obtain a palindrome (99999).
The spelling of 172272 in words is "one hundred seventy-two thousand, two hundred seventy-two", and thus it is an iban number.