8728585858 has 8 divisors (see below), whose sum is σ = 13412217420. Its totient is φ = 4257846720.

The previous prime is 8728585829. The next prime is 8728585861. The reversal of 8728585858 is 8585858278.

8728585858 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6921740809 + 1806845049 = 83197^2 + 42507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×8728585858² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8728585858.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53223003 + ... + 53223166.

Almost surely, 2^8728585858 is an apocalyptic number.

8728585858 is a deficient number, since it is larger than the sum of its proper divisors (4683631562).

8728585858 is a wasteful number, since it uses less digits than its factorization.

8728585858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106446212.

The product of its digits is 57344000, while the sum is 64.

The square root of 8728585858 is about 93426.9011473676. The cubic root of 8728585858 is about 2058.9602521504.

The spelling of 8728585858 in words is "eight billion, seven hundred twenty-eight million, five hundred eighty-five thousand, eight hundred fifty-eight".