275856 has 40 divisors (see below), whose sum is σ = 815424. Its totient is φ = 78720.

The previous prime is 275837. The next prime is 275881. The reversal of 275856 is 658572.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 75 + ... + 746.

2²⁷⁵⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407712).

275856 is an abundant number, since it is smaller than the sum of its proper divisors (539568).

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

275856 is a wasteful number, since it uses less digits than its factorization.

275856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 833 counting only the distinct ones).

The product of its digits is 16800, while the sum is 33.

The square root of 275856 is about 525.2199539241. The cubic root of 275856 is about 65.0969755627.

The spelling of 275856 in words is "two hundred seventy-five thousand, eight hundred fifty-six".