Adding to 72100 its reverse (127), we get a palindrome (72227).
72100 is nontrivially palindromic in base 9.
It is a nialpdrome in base 10.
It is a zygodrome in base 9.
It is a congruent number.
72100 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
272100 is an apocalyptic number.
72100 is a gapful number since it is divisible by the number (70) 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 72100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90272).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72100 is a wasteful number, since it uses less digits than its factorization.
72100 is an odious number, because the sum of its binary digits is odd.
The square root of 72100 is about 268.5144316420. The cubic root of 72100 is about 41.6209275866.
The spelling of 72100 in words is "seventy-two thousand, one hundred", and thus it is an iban number.