540544240 has 40 divisors (see below), whose sum is σ = 1330696080. Its totient is φ = 203498496.

The previous prime is 540544219. The next prime is 540544247. The reversal of 540544240 is 42445045.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 540544199 and 540544208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540544247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197370 + ... + 200089.

It is an arithmetic number, because the mean of its divisors is an integer number (33267402).

Almost surely, 2^540544240 is an apocalyptic number.

It is an amenable number.

540544240 is an abundant number, since it is smaller than the sum of its proper divisors (790151840).

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

540544240 is a wasteful number, since it uses less digits than its factorization.

540544240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397489 (or 397483 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 540544240 is about 23249.6073085117. The cubic root of 540544240 is about 814.5987662050.

Adding to 540544240 its reverse (42445045), we get a palindrome (582989285).

The spelling of 540544240 in words is "five hundred forty million, five hundred forty-four thousand, two hundred forty".