275480 has 32 divisors (see below), whose sum is σ = 635040. Its totient is φ = 107520.

The previous prime is 275461. The next prime is 275489. The reversal of 275480 is 84572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275489) by changing a digit.

275480 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2792 + ... + 2888.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

2²⁷⁵⁴⁸⁰ is an apocalyptic number.

275480 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 275480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317520).

275480 is an abundant number, since it is smaller than the sum of its proper divisors (359560).

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

275480 is a wasteful number, since it uses less digits than its factorization.

275480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 275480 is about 524.8618865949. The cubic root of 275480 is about 65.0673857381.

The spelling of 275480 in words is "two hundred seventy-five thousand, four hundred eighty".