275730 has 64 divisors (see below), whose sum is σ = 822528. Its totient is φ = 57600.

The previous prime is 275729. The next prime is 275741. The reversal of 275730 is 37572.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 275730.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2680 + ... + 2780.

It is an arithmetic number, because the mean of its divisors is an integer number (12852).

2²⁷⁵⁷³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411264).

275730 is an abundant number, since it is smaller than the sum of its proper divisors (546798).

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

275730 is a wasteful number, since it uses less digits than its factorization.

275730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 275730 is about 525.0999904780. The cubic root of 275730 is about 65.0870628207.

The spelling of 275730 in words is "two hundred seventy-five thousand, seven hundred thirty".