540731844 has 36 divisors (see below), whose sum is σ = 1377295920. Its totient is φ = 178866480.

The previous prime is 540731843. The next prime is 540731879. The reversal of 540731844 is 448137045.

540731844 is a `hidden beast` number, since 540 + 7 + 31 + 84 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 540731799 and 540731808.

It is not an unprimeable number, because it can be changed into a prime (540731843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52614 + ... + 62045.

It is an arithmetic number, because the mean of its divisors is an integer number (38258220).

Almost surely, 2^540731844 is an apocalyptic number.

It is an amenable number.

540731844 is an abundant number, since it is smaller than the sum of its proper divisors (836564076).

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

540731844 is a wasteful number, since it uses less digits than its factorization.

540731844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114800 (or 114795 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 540731844 is about 23253.6415212758. The cubic root of 540731844 is about 814.6929948850.

Adding to 540731844 its reverse (448137045), we get a palindrome (988868889).

The spelling of 540731844 in words is "five hundred forty million, seven hundred thirty-one thousand, eight hundred forty-four".