32040440 has 16 divisors (see below), whose sum is σ = 72091080. Its totient is φ = 12816160.

The previous prime is 32040397. The next prime is 32040443. The reversal of 32040440 is 4404023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32040443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400466 + ... + 400545.

Almost surely, 2^32040440 is an apocalyptic number.

It is an amenable number.

32040440 is an abundant number, since it is smaller than the sum of its proper divisors (40050640).

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

32040440 is a wasteful number, since it uses less digits than its factorization.

32040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801022 (or 801018 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 32040440 is about 5660.4275456895. The cubic root of 32040440 is about 317.6138926344.

Adding to 32040440 its reverse (4404023), we get a palindrome (36444463).

The spelling of 32040440 in words is "thirty-two million, forty thousand, four hundred forty".