28056271056 has 160 divisors (see below), whose sum is σ = 82656709632. Its totient is φ = 8117345280.

The previous prime is 28056271051. The next prime is 28056271057. The reversal of 28056271056 is 65017265082.

It is a junction number, because it is equal to n+sod(n) for n = 28056270999 and 28056271017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056271051) 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 31 ways as a sum of consecutive naturals, for example, 7806796 + ... + 7810388.

Almost surely, 2^28056271056 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 28056271056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41328354816).

28056271056 is an abundant number, since it is smaller than the sum of its proper divisors (54600438576).

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

28056271056 is a wasteful number, since it uses less digits than its factorization.

28056271056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 28056271056 in words is "twenty-eight billion, fifty-six million, two hundred seventy-one thousand, fifty-six".