32001330440 has 32 divisors (see below), whose sum is σ = 72008893080. Its totient is φ = 12799483392.

The previous prime is 32001330433. The next prime is 32001330443. The reversal of 32001330440 is 4403310023.

It can be written as a sum of positive squares in 4 ways, for example, as 31884387844 + 116942596 = 178562^2 + 10814^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (32001330443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624014 + ... + 673346.

Almost surely, 2^32001330440 is an apocalyptic number.

It is an amenable number.

32001330440 is an abundant number, since it is smaller than the sum of its proper divisors (40007562640).

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

32001330440 is a wasteful number, since it uses less digits than its factorization.

32001330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65561 (or 65557 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 32001330440 its reverse (4403310023), we get a palindrome (36404640463).

The spelling of 32001330440 in words is "thirty-two billion, one million, three hundred thirty thousand, four hundred forty".