32040040 has 16 divisors (see below), whose sum is σ = 72090180. Its totient is φ = 12816000.

The previous prime is 32040013. The next prime is 32040049. The reversal of 32040040 is 4004023.

It can be written as a sum of positive squares in 2 ways, for example, as 27688644 + 4351396 = 5262^2 + 2086^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 32040040.

It is not an unprimeable number, because it can be changed into a prime (32040049) 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, 400461 + ... + 400540.

Almost surely, 2^32040040 is an apocalyptic number.

It is an amenable number.

32040040 is an abundant number, since it is smaller than the sum of its proper divisors (40050140).

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

32040040 is a wasteful number, since it uses less digits than its factorization.

32040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801012 (or 801008 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 32040040 is about 5660.3922125591. The cubic root of 32040040 is about 317.6125709080.

Adding to 32040040 its reverse (4004023), we get a palindrome (36044063).

The spelling of 32040040 in words is "thirty-two million, forty thousand, forty", and thus it is an eban number.