28108779922 has 8 divisors (see below), whose sum is σ = 42163969536. Its totient is φ = 14054123412.

The previous prime is 28108779893. The next prime is 28108779961. The reversal of 28108779922 is 22997780182.

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

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, 47683 + ... + 241849.

It is an arithmetic number, because the mean of its divisors is an integer number (5270496192).

Almost surely, 2^28108779922 is an apocalyptic number.

28108779922 is a deficient number, since it is larger than the sum of its proper divisors (14055189614).

28108779922 is a wasteful number, since it uses less digits than its factorization.

28108779922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266552.

The product of its (nonzero) digits is 2032128, while the sum is 55.

The spelling of 28108779922 in words is "twenty-eight billion, one hundred eight million, seven hundred seventy-nine thousand, nine hundred twenty-two".