28132950668 has 12 divisors (see below), whose sum is σ = 49233999360. Its totient is φ = 14066093712.

The previous prime is 28132950661. The next prime is 28132950673. The reversal of 28132950668 is 86605923182.

It is not an unprimeable number, because it can be changed into a prime (28132950661) 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, 129230 + ... + 270122.

It is an arithmetic number, because the mean of its divisors is an integer number (4102833280).

Almost surely, 2^28132950668 is an apocalyptic number.

It is an amenable number.

28132950668 is a deficient number, since it is larger than the sum of its proper divisors (21101048692).

28132950668 is a wasteful number, since it uses less digits than its factorization.

28132950668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190816 (or 190814 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 28132950668 in words is "twenty-eight billion, one hundred thirty-two million, nine hundred fifty thousand, six hundred sixty-eight".