28223066642 has 16 divisors (see below), whose sum is σ = 44302565952. Its totient is φ = 13459081680.

The previous prime is 28223066629. The next prime is 28223066657. The reversal of 28223066642 is 24666032282.

It is a self number, because there is not a number n which added to its sum of digits gives 28223066642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868109 + ... + 900032.

It is an arithmetic number, because the mean of its divisors is an integer number (2768910372).

Almost surely, 2^28223066642 is an apocalyptic number.

28223066642 is a deficient number, since it is larger than the sum of its proper divisors (16079499310).

28223066642 is a wasteful number, since it uses less digits than its factorization.

28223066642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768513.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 28223066642 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, six hundred forty-two".