540244 has 12 divisors (see below), whose sum is σ = 953568. Its totient is φ = 267800.

The previous prime is 540233. The next prime is 540251. The reversal of 540244 is 442045.

It is a congruent number.

It is an unprimeable number.

540244 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (79464).

2⁵⁴⁰²⁴⁴ is an apocalyptic number.

It is an amenable number.

540244 is a deficient number, since it is larger than the sum of its proper divisors (413324).

540244 is a wasteful number, since it uses less digits than its factorization.

540244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 540244 is about 735.0129250564. The cubic root of 540244 is about 81.4447917972. Note that the first 3 decimals are identical.

Subtracting from 540244 its sum of digits (19), we obtain a square (540225 = 735²).

Adding to 540244 its reverse (442045), we get a palindrome (982289).

It can be divided in two parts, 540 and 244, that added together give a square (784 = 28²).

The spelling of 540244 in words is "five hundred forty thousand, two hundred forty-four".