275438 has 8 divisors (see below), whose sum is σ = 423360. Its totient is φ = 134320.

The previous prime is 275423. The next prime is 275447. The reversal of 275438 is 834572.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 275438.

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 275438.

It is an unprimeable number.

275438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1598 + ... + 1761.

It is an arithmetic number, because the mean of its divisors is an integer number (52920).

2²⁷⁵⁴³⁸ is an apocalyptic number.

275438 is a deficient number, since it is larger than the sum of its proper divisors (147922).

275438 is a wasteful number, since it uses less digits than its factorization.

275438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3402.

The product of its digits is 6720, while the sum is 29.

The square root of 275438 is about 524.8218745441. The cubic root of 275438 is about 65.0640788204.

The spelling of 275438 in words is "two hundred seventy-five thousand, four hundred thirty-eight".