275390 has 8 divisors (see below), whose sum is σ = 495720. Its totient is φ = 110152.

The previous prime is 275389. The next prime is 275393. The reversal of 275390 is 93572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13760 + ... + 13779.

It is an arithmetic number, because the mean of its divisors is an integer number (61965).

2²⁷⁵³⁹⁰ is an apocalyptic number.

275390 is a deficient number, since it is larger than the sum of its proper divisors (220330).

275390 is a wasteful number, since it uses less digits than its factorization.

275390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27546.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 275390 is about 524.7761427504. The cubic root of 275390 is about 65.0602990742.

It can be divided in two parts, 27 and 5390, that multiplied together give a triangular number (145530 = T₅₃₉).

The spelling of 275390 in words is "two hundred seventy-five thousand, three hundred ninety".