8720580 has 96 divisors (see below), whose sum is σ = 27151488. Its totient is φ = 2073600.

The previous prime is 8720557. The next prime is 8720581. The reversal of 8720580 is 850278.

8720580 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (8720581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48090 + ... + 48270.

It is an arithmetic number, because the mean of its divisors is an integer number (282828).

Almost surely, 2^8720580 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 8720580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13575744).

8720580 is an abundant number, since it is smaller than the sum of its proper divisors (18430908).

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

8720580 is a wasteful number, since it uses less digits than its factorization.

8720580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 8720580 is about 2953.0628168056. The cubic root of 8720580 is about 205.8330566889.

The spelling of 8720580 in words is "eight million, seven hundred twenty thousand, five hundred eighty".