8128986 has 16 divisors (see below), whose sum is σ = 16337568. Its totient is φ = 2696400.

The previous prime is 8128969. The next prime is 8129027. The reversal of 8128986 is 6898218.

8128986 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 1945 + ... + 4476.

It is an arithmetic number, because the mean of its divisors is an integer number (1021098).

Almost surely, 2^8128986 is an apocalyptic number.

8128986 is an abundant number, since it is smaller than the sum of its proper divisors (8208582).

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

8128986 is a wasteful number, since it uses less digits than its factorization.

8128986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6637.

The product of its digits is 55296, while the sum is 42.

The square root of 8128986 is about 2851.1376676688. The cubic root of 8128986 is about 201.0691576582.

The spelling of 8128986 in words is "eight million, one hundred twenty-eight thousand, nine hundred eighty-six".