540656040 has 128 divisors (see below), whose sum is σ = 1667381760. Its totient is φ = 140181504.

The previous prime is 540656029. The next prime is 540656041. The reversal of 540656040 is 40656045.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 540655989 and 540656007.

It is not an unprimeable number, because it can be changed into a prime (540656041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1449294 + ... + 1449666.

It is an arithmetic number, because the mean of its divisors is an integer number (13026420).

Almost surely, 2^540656040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 540656040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833690880).

540656040 is an abundant number, since it is smaller than the sum of its proper divisors (1126725720).

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

540656040 is a wasteful number, since it uses less digits than its factorization.

540656040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 540656040 is about 23252.0115258874. The cubic root of 540656040 is about 814.6549231035.

The spelling of 540656040 in words is "five hundred forty million, six hundred fifty-six thousand, forty".