273945 has 16 divisors (see below), whose sum is σ = 501120. Its totient is φ = 125184.

The previous prime is 273943. The next prime is 273967. The reversal of 273945 is 549372.

It is not a de Polignac number, because 273945 - 2¹ = 273943 is a prime.

273945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (273941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1200 + ... + 1409.

It is an arithmetic number, because the mean of its divisors is an integer number (31320).

2²⁷³⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

273945 is a deficient number, since it is larger than the sum of its proper divisors (227175).

273945 is a wasteful number, since it uses less digits than its factorization.

273945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624.

The product of its digits is 7560, while the sum is 30.

The square root of 273945 is about 523.3975544459. The cubic root of 273945 is about 64.9463067437.

The spelling of 273945 in words is "two hundred seventy-three thousand, nine hundred forty-five".