274240 has 28 divisors (see below), whose sum is σ = 653796. Its totient is φ = 109568.

The previous prime is 274237. The next prime is 274243. The reversal of 274240 is 42472.

It is an interprime number because it is at equal distance from previous prime (274237) and next prime (274243).

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 87616 = 432^2 + 296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109 + ... + 748.

2²⁷⁴²⁴⁰ is an apocalyptic number.

274240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

274240 is an abundant number, since it is smaller than the sum of its proper divisors (379556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

274240 is an equidigital number, since it uses as much as digits as its factorization.

274240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 274240 is about 523.6792911697. The cubic root of 274240 is about 64.9696110412.

The spelling of 274240 in words is "two hundred seventy-four thousand, two hundred forty", and thus it is an iban number.