32520313252 has 24 divisors (see below), whose sum is σ = 66626985600. Its totient is φ = 13597343040.

The previous prime is 32520313247. The next prime is 32520313283. The reversal of 32520313252 is 25231302523.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 32520313252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14162752 + ... + 14165047.

It is an arithmetic number, because the mean of its divisors is an integer number (2776124400).

Almost surely, 2^32520313252 is an apocalyptic number.

It is an amenable number.

32520313252 is an abundant number, since it is smaller than the sum of its proper divisors (34106672348).

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

32520313252 is a wasteful number, since it uses less digits than its factorization.

32520313252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28327851 (or 28327849 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 32520313252 its reverse (25231302523), we get a palindrome (57751615775).

The spelling of 32520313252 in words is "thirty-two billion, five hundred twenty million, three hundred thirteen thousand, two hundred fifty-two".