28059551808 has 112 divisors (see below), whose sum is σ = 76909452480. Its totient is φ = 9017903104.

The previous prime is 28059551803. The next prime is 28059551843. The reversal of 28059551808 is 80815595082.

It is not an unprimeable number, because it can be changed into a prime (28059551803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4434535 + ... + 4440857.

It is an arithmetic number, because the mean of its divisors is an integer number (686691540).

Almost surely, 2^28059551808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28059551808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38454726240).

28059551808 is an abundant number, since it is smaller than the sum of its proper divisors (48849900672).

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

28059551808 is a wasteful number, since it uses less digits than its factorization.

28059551808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164 (or 7154 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 28059551808 in words is "twenty-eight billion, fifty-nine million, five hundred fifty-one thousand, eight hundred eight".