32220430728 has 16 divisors (see below), whose sum is σ = 80551076880. Its totient is φ = 10740143568.

The previous prime is 32220430727. The next prime is 32220430729. The reversal of 32220430728 is 82703402223.

It is an interprime number because it is at equal distance from previous prime (32220430727) and next prime (32220430729).

It is not an unprimeable number, because it can be changed into a prime (32220430727) 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, 671258950 + ... + 671258997.

It is an arithmetic number, because the mean of its divisors is an integer number (5034442305).

Almost surely, 2^32220430728 is an apocalyptic number.

It is an amenable number.

32220430728 is an abundant number, since it is smaller than the sum of its proper divisors (48330646152).

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

32220430728 is a wasteful number, since it uses less digits than its factorization.

32220430728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342517956 (or 1342517952 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 33.

The spelling of 32220430728 in words is "thirty-two billion, two hundred twenty million, four hundred thirty thousand, seven hundred twenty-eight".