28894428876 has 24 divisors (see below), whose sum is σ = 67951206400. Its totient is φ = 9555637392.

The previous prime is 28894428841. The next prime is 28894428883. The reversal of 28894428876 is 67882449882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9478276 + ... + 9481323.

Almost surely, 2^28894428876 is an apocalyptic number.

It is an amenable number.

28894428876 is an abundant number, since it is smaller than the sum of its proper divisors (39056777524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28894428876 is a wasteful number, since it uses less digits than its factorization.

28894428876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18959733 (or 18959731 counting only the distinct ones).

The product of its digits is 99090432, while the sum is 66.

The spelling of 28894428876 in words is "twenty-eight billion, eight hundred ninety-four million, four hundred twenty-eight thousand, eight hundred seventy-six".