32640403224 has 64 divisors (see below), whose sum is σ = 95866928640. Its totient is φ = 9130181760.

The previous prime is 32640403217. The next prime is 32640403249. The reversal of 32640403224 is 42230404623.

It is a junction number, because it is equal to n+sod(n) for n = 32640403191 and 32640403200.

It is a congruent number.

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, 4751872 + ... + 4758735.

It is an arithmetic number, because the mean of its divisors is an integer number (1497920760).

Almost surely, 2^32640403224 is an apocalyptic number.

It is an amenable number.

32640403224 is an abundant number, since it is smaller than the sum of its proper divisors (63226525416).

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

32640403224 is a wasteful number, since it uses less digits than its factorization.

32640403224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510640 (or 9510636 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 32640403224 its reverse (42230404623), we get a palindrome (74870807847).

The spelling of 32640403224 in words is "thirty-two billion, six hundred forty million, four hundred three thousand, two hundred twenty-four".