274387 has 4 divisors (see below), whose sum is σ = 277560. Its totient is φ = 271216.

The previous prime is 274361. The next prime is 274403. The reversal of 274387 is 783472.

274387 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 274387 - 2⁷ = 274259 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274357) 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, 1453 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (69390).

2²⁷⁴³⁸⁷ is an apocalyptic number.

274387 is a deficient number, since it is larger than the sum of its proper divisors (3173).

274387 is an equidigital number, since it uses as much as digits as its factorization.

274387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172.

The product of its digits is 9408, while the sum is 31.

The square root of 274387 is about 523.8196254437. The cubic root of 274387 is about 64.9812174528.

The spelling of 274387 in words is "two hundred seventy-four thousand, three hundred eighty-seven".