32220420672 has 56 divisors (see below), whose sum is σ = 92999856672. Its totient is φ = 9763763200.

The previous prime is 32220420653. The next prime is 32220420677. The reversal of 32220420672 is 27602402223.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (32220420677) 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, 7625829 + ... + 7630052.

Almost surely, 2^32220420672 is an apocalyptic number.

32220420672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

32220420672 is an abundant number, since it is smaller than the sum of its proper divisors (60779436000).

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

32220420672 is a wasteful number, since it uses less digits than its factorization.

32220420672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15255907 (or 15255897 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

Adding to 32220420672 its reverse (27602402223), we get a palindrome (59822822895).

The spelling of 32220420672 in words is "thirty-two billion, two hundred twenty million, four hundred twenty thousand, six hundred seventy-two".