It is a tau number, because it is divible by the number of its divisors (80).
It is a self number, because there is not a number n which added to its sum of digits gives 275280.
It is a congruent number.
It is an unprimeable number.
275280 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2275280 is an apocalyptic number.
275280 is a gapful number since it is divisible by the number (20) 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 275280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452352).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
275280 is a wasteful number, since it uses less digits than its factorization.
275280 is an odious number, because the sum of its binary digits is odd.
The square root of 275280 is about 524.6713256888. The cubic root of 275280 is about 65.0516354989.
The spelling of 275280 in words is "two hundred seventy-five thousand, two hundred eighty".