273280 has 64 divisors (see below), whose sum is σ = 758880. Its totient is φ = 92160.

The previous prime is 273271. The next prime is 273281. The reversal of 273280 is 82372.

It is a happy number.

273280 is nontrivially palindromic in base 3.

It is a tau number, because it is divible by the number of its divisors (64).

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4450 + ... + 4510.

2²⁷³²⁸⁰ is an apocalyptic number.

273280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

273280 is the 427-th pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379440).

273280 is an abundant number, since it is smaller than the sum of its proper divisors (485600).

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

273280 is an equidigital number, since it uses as much as digits as its factorization.

273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 273280 is about 522.7618960865. The cubic root of 273280 is about 64.8937118938.

The spelling of 273280 in words is "two hundred seventy-three thousand, two hundred eighty".