8720441856 has 960 divisors, whose sum is σ = 34317803520. Its totient is φ = 2149908480.

The previous prime is 8720441831. The next prime is 8720441857. The reversal of 8720441856 is 6581440278.

It is a super-2 number, since 2×8720441856² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8720441857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 281304561 + ... + 281304591.

It is an arithmetic number, because the mean of its divisors is an integer number (35747712).

Almost surely, 2^8720441856 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 8720441856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17158901760).

8720441856 is an abundant number, since it is smaller than the sum of its proper divisors (25597361664).

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

8720441856 is a wasteful number, since it uses less digits than its factorization.

8720441856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 8720441856 is about 93383.3060884010. The cubic root of 8720441856 is about 2058.3196980584.

The spelling of 8720441856 in words is "eight billion, seven hundred twenty million, four hundred forty-one thousand, eight hundred fifty-six".