8656872 has 48 divisors (see below), whose sum is σ = 24843360. Its totient is φ = 2462496.

The previous prime is 8656871. The next prime is 8656891. The reversal of 8656872 is 2786568.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (8656871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38023 + ... + 38249.

It is an arithmetic number, because the mean of its divisors is an integer number (517570).

Almost surely, 2^8656872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8656872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12421680).

8656872 is an abundant number, since it is smaller than the sum of its proper divisors (16186488).

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

8656872 is a wasteful number, since it uses less digits than its factorization.

8656872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 239 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 8656872 is about 2942.2562770772. The cubic root of 8656872 is about 205.3305948736.

Multiplying 8656872 by its sum of digits (42), we get a square (363588624 = 19068²).

8656872 divided by its sum of digits (42) gives a square (206116 = 454²).

The spelling of 8656872 in words is "eight million, six hundred fifty-six thousand, eight hundred seventy-two".