8642128 has 20 divisors (see below), whose sum is σ = 18266688. Its totient is φ = 3928160.

The previous prime is 8642119. The next prime is 8642141. The reversal of 8642128 is 8212468.

It is a self number, because there is not a number n which added to its sum of digits gives 8642128.

It is a congruent number.

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, 24376 + ... + 24727.

Almost surely, 2^8642128 is an apocalyptic number.

8642128 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8642128 is an abundant number, since it is smaller than the sum of its proper divisors (9624560).

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

8642128 is a wasteful number, since it uses less digits than its factorization.

8642128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49122 (or 49116 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 8642128 is about 2939.7496492048. The cubic root of 8642128 is about 205.2139586480.

It can be divided in two parts, 864 and 2128, that added together give a palindrome (2992).

The spelling of 8642128 in words is "eight million, six hundred forty-two thousand, one hundred twenty-eight".