275388 has 24 divisors (see below), whose sum is σ = 656208. Its totient is φ = 89856.

The previous prime is 275371. The next prime is 275389. The reversal of 275388 is 883572.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 275388.

It is not an unprimeable number, because it can be changed into a prime (275389) by changing a digit.

275388 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, 420 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (27342).

2²⁷⁵³⁸⁸ is an apocalyptic number.

It is an amenable number.

275388 is an abundant number, since it is smaller than the sum of its proper divisors (380820).

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

275388 is a wasteful number, since it uses less digits than its factorization.

275388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 491 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 275388 is about 524.7742371725. The cubic root of 275388 is about 65.0601415752.

The spelling of 275388 in words is "two hundred seventy-five thousand, three hundred eighty-eight".