8720844080 has 40 divisors (see below), whose sum is σ = 21835654512. Its totient is φ = 3220003584.

The previous prime is 8720844071. The next prime is 8720844107. The reversal of 8720844080 is 804480278.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4191674 + ... + 4193753.

Almost surely, 2^8720844080 is an apocalyptic number.

8720844080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8720844080 is an abundant number, since it is smaller than the sum of its proper divisors (13114810432).

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

8720844080 is a wasteful number, since it uses less digits than its factorization.

8720844080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8385453 (or 8385447 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 8720844080 is about 93385.4596819012. The cubic root of 8720844080 is about 2058.3513437352.

The spelling of 8720844080 in words is "eight billion, seven hundred twenty million, eight hundred forty-four thousand, eighty".