28533332844 has 36 divisors (see below), whose sum is σ = 72213850800. Its totient is φ = 9499516320.

The previous prime is 28533332837. The next prime is 28533332857. The reversal of 28533332844 is 44823333582.

28533332844 is a `hidden beast` number, since 2 + 8 + 533 + 3 + 32 + 84 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28533332844.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453144 + ... + 512255.

It is an arithmetic number, because the mean of its divisors is an integer number (2005940300).

Almost surely, 2^28533332844 is an apocalyptic number.

It is an amenable number.

28533332844 is an abundant number, since it is smaller than the sum of its proper divisors (43680517956).

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

28533332844 is a wasteful number, since it uses less digits than its factorization.

28533332844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966230 (or 966225 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 45.

The spelling of 28533332844 in words is "twenty-eight billion, five hundred thirty-three million, three hundred thirty-two thousand, eight hundred forty-four".