224540 has 24 divisors (see below), whose sum is σ = 480480. Its totient is φ = 88128.

The previous prime is 224527. The next prime is 224563. The reversal of 224540 is 45422.

It is a congruent number.

It is an unprimeable number.

224540 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 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 2114.

It is an arithmetic number, because the mean of its divisors is an integer number (20020).

2²²⁴⁵⁴⁰ is an apocalyptic number.

224540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224540 is an abundant number, since it is smaller than the sum of its proper divisors (255940).

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

224540 is a wasteful number, since it uses less digits than its factorization.

224540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

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

The square root of 224540 is about 473.8565183682. The cubic root of 224540 is about 60.7805425966.

Adding to 224540 its reverse (45422), we get a palindrome (269962).

It can be divided in two parts, 2 and 24540, that added together give a palindrome (24542).

The spelling of 224540 in words is "two hundred twenty-four thousand, five hundred forty".