28090841856 has 288 divisors, whose sum is σ = 95386841088. Its totient is φ = 7125995520.

The previous prime is 28090841843. The next prime is 28090841881. The reversal of 28090841856 is 65814809082.

It is a junction number, because it is equal to n+sod(n) for n = 28090841799 and 28090841808.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 2537325 + ... + 2548371.

Almost surely, 2^28090841856 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 28090841856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47693420544).

28090841856 is an abundant number, since it is smaller than the sum of its proper divisors (67295999232).

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

28090841856 is a wasteful number, since it uses less digits than its factorization.

28090841856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11127 (or 11113 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 28090841856 in words is "twenty-eight billion, ninety million, eight hundred forty-one thousand, eight hundred fifty-six".