5640012 has 36 divisors (see below), whose sum is σ = 16294096. Its totient is φ = 1611360.

The previous prime is 5639989. The next prime is 5640031. The reversal of 5640012 is 2100465.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10939 + ... + 11442.

Almost surely, 2^5640012 is an apocalyptic number.

It is an amenable number.

5640012 is an abundant number, since it is smaller than the sum of its proper divisors (10654084).

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

5640012 is a wasteful number, since it uses less digits than its factorization.

5640012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22398 (or 22393 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5640012 is about 2374.8709438620. The cubic root of 5640012 is about 178.0027353028.

Adding to 5640012 its reverse (2100465), we get a palindrome (7740477).

The spelling of 5640012 in words is "five million, six hundred forty thousand, twelve".