8218128 has 40 divisors (see below), whose sum is σ = 21336928. Its totient is φ = 2725632.

The previous prime is 8218109. The next prime is 8218139.

8218128 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 8218095 and 8218104.

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 7 ways as a sum of consecutive naturals, for example, 14751 + ... + 15297.

Almost surely, 2^8218128 is an apocalyptic number.

It is an amenable number.

8218128 is an abundant number, since it is smaller than the sum of its proper divisors (13118800).

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

8218128 is a wasteful number, since it uses less digits than its factorization.

8218128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 865 counting only the distinct ones).

The product of its digits is 2048, while the sum is 30.

The square root of 8218128 is about 2866.7277512872. The cubic root of 8218128 is about 201.8014583541.

The spelling of 8218128 in words is "eight million, two hundred eighteen thousand, one hundred twenty-eight".