28223066442 has 8 divisors (see below), whose sum is σ = 56446132896. Its totient is φ = 9407688812.

The previous prime is 28223066437. The next prime is 28223066453. The reversal of 28223066442 is 24466032282.

It is a happy number.

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

28223066442 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28223066442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2351922198 + ... + 2351922209.

It is an arithmetic number, because the mean of its divisors is an integer number (7055766612).

Almost surely, 2^28223066442 is an apocalyptic number.

28223066442 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.

28223066442 is a wasteful number, since it uses less digits than its factorization.

28223066442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703844412.

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 28223066442 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, four hundred forty-two".