254240 has 48 divisors (see below), whose sum is σ = 689472. Its totient is φ = 86784.

The previous prime is 254213. The next prime is 254249. The reversal of 254240 is 42452.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254240.

It is not an unprimeable number, because it can be changed into a prime (254249) 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 7 ways as a sum of consecutive naturals, for example, 1007 + ... + 1233.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2²⁵⁴²⁴⁰ is an apocalyptic number.

254240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 254240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344736).

254240 is an abundant number, since it is smaller than the sum of its proper divisors (435232).

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

254240 is a wasteful number, since it uses less digits than its factorization.

254240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 254240 is about 504.2221732530. Note that the first 3 decimals coincide. The cubic root of 254240 is about 63.3501955717.

Adding to 254240 its reverse (42452), we get a palindrome (296692).

It can be divided in two parts, 254 and 240, that added together give a palindrome (494).

The spelling of 254240 in words is "two hundred fifty-four thousand, two hundred forty".