28220660022 has 8 divisors (see below), whose sum is σ = 56441320056. Its totient is φ = 9406886672.

The previous prime is 28220659993. The next prime is 28220660029. The reversal of 28220660022 is 22006602282.

It is a sphenic number, since it is the product of 3 distinct primes.

28220660022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28220660029) 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, 2351721663 + ... + 2351721674.

It is an arithmetic number, because the mean of its divisors is an integer number (7055165007).

Almost surely, 2^28220660022 is an apocalyptic number.

28220660022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28220660022 is a wasteful number, since it uses less digits than its factorization.

28220660022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703443342.

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 28220660022 in words is "twenty-eight billion, two hundred twenty million, six hundred sixty thousand, twenty-two".