32220448240 has 20 divisors (see below), whose sum is σ = 74912542344. Its totient is φ = 12888179264.

The previous prime is 32220448237. The next prime is 32220448241. The reversal of 32220448240 is 4284402223.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32220448241) 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, 201377722 + ... + 201377881.

Almost surely, 2^32220448240 is an apocalyptic number.

It is an amenable number.

32220448240 is an abundant number, since it is smaller than the sum of its proper divisors (42692094104).

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

32220448240 is a wasteful number, since it uses less digits than its factorization.

32220448240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402755616 (or 402755610 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

The spelling of 32220448240 in words is "thirty-two billion, two hundred twenty million, four hundred forty-eight thousand, two hundred forty".