540005640 has 32 divisors (see below), whose sum is σ = 1620017280. Its totient is φ = 144001472.

The previous prime is 540005621. The next prime is 540005659. The reversal of 540005640 is 46500045.

It is an interprime number because it is at equal distance from previous prime (540005621) and next prime (540005659).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 540005640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249904 + ... + 2250143.

It is an arithmetic number, because the mean of its divisors is an integer number (50625540).

Almost surely, 2^540005640 is an apocalyptic number.

It is an amenable number.

540005640 is an abundant number, since it is smaller than the sum of its proper divisors (1080011640).

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

540005640 is a wasteful number, since it uses less digits than its factorization.

540005640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500061 (or 4500057 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 540005640 is about 23238.0214304058. The cubic root of 540005640 is about 814.3281200270.

Adding to 540005640 its reverse (46500045), we get a palindrome (586505685).

The spelling of 540005640 in words is "five hundred forty million, five thousand, six hundred forty".