28205976922 has 8 divisors (see below), whose sum is σ = 42371462196. Its totient is φ = 14082156192.

The previous prime is 28205976871. The next prime is 28205976923. The reversal of 28205976922 is 22967950282.

It can be written as a sum of positive squares in 2 ways, for example, as 17221050441 + 10984926481 = 131229^2 + 104809^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28205976922.

It is not an unprimeable number, because it can be changed into a prime (28205976923) 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, 10414443 + ... + 10417150.

Almost surely, 2^28205976922 is an apocalyptic number.

28205976922 is a deficient number, since it is larger than the sum of its proper divisors (14165485274).

28205976922 is a wasteful number, since it uses less digits than its factorization.

28205976922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20832272.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 28205976922 in words is "twenty-eight billion, two hundred five million, nine hundred seventy-six thousand, nine hundred twenty-two".