8506728 has 32 divisors (see below), whose sum is σ = 23630400. Its totient is φ = 2835504.

The previous prime is 8506717. The next prime is 8506759. The reversal of 8506728 is 8276058.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8506692 and 8506701.

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, 19476 + ... + 19907.

It is an arithmetic number, because the mean of its divisors is an integer number (738450).

Almost surely, 2^8506728 is an apocalyptic number.

It is an amenable number.

8506728 is an abundant number, since it is smaller than the sum of its proper divisors (15123672).

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

8506728 is a wasteful number, since it uses less digits than its factorization.

8506728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39398 (or 39388 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 8506728 is about 2916.6295616687. The cubic root of 8506728 is about 204.1365867296.

The spelling of 8506728 in words is "eight million, five hundred six thousand, seven hundred twenty-eight".