8863520856 has 128 divisors (see below), whose sum is σ = 23768363520. Its totient is φ = 2747695104.

The previous prime is 8863520851. The next prime is 8863520867. The reversal of 8863520856 is 6580253688.

It is a junction number, because it is equal to n+sod(n) for n = 8863520799 and 8863520808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8863520851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6099426 + ... + 6100878.

It is an arithmetic number, because the mean of its divisors is an integer number (185690340).

Almost surely, 2^8863520856 is an apocalyptic number.

8863520856 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8863520856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11884181760).

8863520856 is an abundant number, since it is smaller than the sum of its proper divisors (14904842664).

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

8863520856 is a wasteful number, since it uses less digits than its factorization.

8863520856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 51.

The square root of 8863520856 is about 94146.2737233928. The cubic root of 8863520856 is about 2069.5158502714.

The spelling of 8863520856 in words is "eight billion, eight hundred sixty-three million, five hundred twenty thousand, eight hundred fifty-six".