8781059872 has 144 divisors (see below), whose sum is σ = 19786311720. Its totient is φ = 3808788480.

The previous prime is 8781059869. The next prime is 8781059897. The reversal of 8781059872 is 2789501878.

It can be written as a sum of positive squares in 12 ways, for example, as 2608757776 + 6172302096 = 51076^2 + 78564^2 .

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 23 ways as a sum of consecutive naturals, for example, 20279368 + ... + 20279800.

Almost surely, 2^8781059872 is an apocalyptic number.

8781059872 is a gapful number since it is divisible by the number (82) 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 8781059872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9893155860).

8781059872 is an abundant number, since it is smaller than the sum of its proper divisors (11005251848).

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

8781059872 is a wasteful number, since it uses less digits than its factorization.

8781059872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 55.

The square root of 8781059872 is about 93707.3095974908. The cubic root of 8781059872 is about 2063.0779914323.

The spelling of 8781059872 in words is "eight billion, seven hundred eighty-one million, fifty-nine thousand, eight hundred seventy-two".