8505128 has 16 divisors (see below), whose sum is σ = 16003680. Its totient is φ = 4237488.

The previous prime is 8505127. The next prime is 8505137. The reversal of 8505128 is 8215058.

It is a self number, because there is not a number n which added to its sum of digits gives 8505128.

It is not an unprimeable number, because it can be changed into a prime (8505127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725 + ... + 4187.

It is an arithmetic number, because the mean of its divisors is an integer number (1000230).

Almost surely, 2^8505128 is an apocalyptic number.

It is an amenable number.

8505128 is a deficient number, since it is larger than the sum of its proper divisors (7498552).

8505128 is a wasteful number, since it uses less digits than its factorization.

8505128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776 (or 3772 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 8505128 is about 2916.3552595663. The cubic root of 8505128 is about 204.1237874873.

The spelling of 8505128 in words is "eight million, five hundred five thousand, one hundred twenty-eight".