5640040 has 32 divisors (see below), whose sum is σ = 14503680. Its totient is φ = 1933632.

The previous prime is 5640031. The next prime is 5640043. The reversal of 5640040 is 400465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5640043) 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 7 ways as a sum of consecutive naturals, for example, 9792 + ... + 10351.

It is an arithmetic number, because the mean of its divisors is an integer number (453240).

Almost surely, 2^5640040 is an apocalyptic number.

It is an amenable number.

5640040 is an abundant number, since it is smaller than the sum of its proper divisors (8863640).

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

5640040 is a wasteful number, since it uses less digits than its factorization.

5640040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20161 (or 20157 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 5640040 is about 2374.8768389119. The cubic root of 5640040 is about 178.0030298689.

The spelling of 5640040 in words is "five million, six hundred forty thousand, forty".