273805 has 8 divisors (see below), whose sum is σ = 375552. Its totient is φ = 187728.

The previous prime is 273803. The next prime is 273821. The reversal of 273805 is 508372.

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

It is a cyclic number.

It is not a de Polignac number, because 273805 - 2¹ = 273803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3877 + ... + 3946.

It is an arithmetic number, because the mean of its divisors is an integer number (46944).

2²⁷³⁸⁰⁵ is an apocalyptic number.

It is an amenable number.

273805 is a deficient number, since it is larger than the sum of its proper divisors (101747).

273805 is an equidigital number, since it uses as much as digits as its factorization.

273805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 273805 is about 523.2637958048. The cubic root of 273805 is about 64.9352412229.

It can be divided in two parts, 27380 and 5, that multiplied together give a square (136900 = 370²).

The spelling of 273805 in words is "two hundred seventy-three thousand, eight hundred five".