28133330877 has 24 divisors (see below), whose sum is σ = 42792921600. Its totient is φ = 17775492768.

The previous prime is 28133330873. The next prime is 28133330891. The reversal of 28133330877 is 77803333182.

28133330877 is a `hidden beast` number, since 2 + 8 + 1 + 333 + 308 + 7 + 7 = 666.

It is not a de Polignac number, because 28133330877 - 2² = 28133330873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28133330873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 600877 + ... + 646002.

It is an arithmetic number, because the mean of its divisors is an integer number (1783038400).

Almost surely, 2^28133330877 is an apocalyptic number.

It is an amenable number.

28133330877 is a deficient number, since it is larger than the sum of its proper divisors (14659590723).

28133330877 is a wasteful number, since it uses less digits than its factorization.

28133330877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247017 (or 1247014 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 28133330877 in words is "twenty-eight billion, one hundred thirty-three million, three hundred thirty thousand, eight hundred seventy-seven".