274840 has 16 divisors (see below), whose sum is σ = 618480. Its totient is φ = 109920.

The previous prime is 274837. The next prime is 274843. The reversal of 274840 is 48472.

274840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (274837) and next prime (274843).

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274843) 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, 3396 + ... + 3475.

It is an arithmetic number, because the mean of its divisors is an integer number (38655).

2²⁷⁴⁸⁴⁰ is an apocalyptic number.

274840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

274840 is an abundant number, since it is smaller than the sum of its proper divisors (343640).

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

274840 is a wasteful number, since it uses less digits than its factorization.

274840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6882 (or 6878 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 274840 is about 524.2518478747. The cubic root of 274840 is about 65.0169581000.

The spelling of 274840 in words is "two hundred seventy-four thousand, eight hundred forty".