28667832722 has 4 divisors (see below), whose sum is σ = 43001749086. Its totient is φ = 14333916360.

The previous prime is 28667832709. The next prime is 28667832733. The reversal of 28667832722 is 22723876682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 25408678801 + 3259153921 = 159401^2 + 57089^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7166958179 + ... + 7166958182.

Almost surely, 2^28667832722 is an apocalyptic number.

28667832722 is a deficient number, since it is larger than the sum of its proper divisors (14333916364).

28667832722 is a wasteful number, since it uses less digits than its factorization.

28667832722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14333916363.

The product of its digits is 5419008, while the sum is 53.

The spelling of 28667832722 in words is "twenty-eight billion, six hundred sixty-seven million, eight hundred thirty-two thousand, seven hundred twenty-two".