32440244240 has 80 divisors (see below), whose sum is σ = 77363910000. Its totient is φ = 12645574656.

The previous prime is 32440244233. The next prime is 32440244267. The reversal of 32440244240 is 4244204423.

It can be written as a sum of positive squares in 8 ways, for example, as 5395783936 + 27044460304 = 73456^2 + 164452^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606086 + ... + 657434.

It is an arithmetic number, because the mean of its divisors is an integer number (967048875).

Almost surely, 2^32440244240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32440244240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38681955000).

32440244240 is an abundant number, since it is smaller than the sum of its proper divisors (44923665760).

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

32440244240 is a wasteful number, since it uses less digits than its factorization.

32440244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51564 (or 51558 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 32440244240 its reverse (4244204423), we get a palindrome (36684448663).

The spelling of 32440244240 in words is "thirty-two billion, four hundred forty million, two hundred forty-four thousand, two hundred forty".