540640233 has 12 divisors (see below), whose sum is σ = 892485568. Its totient is φ = 308937240.

The previous prime is 540640157. The next prime is 540640237. The reversal of 540640233 is 332046045.

It is not a de Polignac number, because 540640233 - 2²¹ = 538543081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540640197 and 540640206.

It is not an unprimeable number, because it can be changed into a prime (540640237) 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, 4290733 + ... + 4290858.

Almost surely, 2^540640233 is an apocalyptic number.

It is an amenable number.

540640233 is a deficient number, since it is larger than the sum of its proper divisors (351845335).

540640233 is a wasteful number, since it uses less digits than its factorization.

540640233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8581604 (or 8581601 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 540640233 is about 23251.6716173268. The cubic root of 540640233 is about 814.6469837515.

Adding to 540640233 its reverse (332046045), we get a palindrome (872686278).

The spelling of 540640233 in words is "five hundred forty million, six hundred forty thousand, two hundred thirty-three".