8640852 has 48 divisors (see below), whose sum is σ = 22217664. Its totient is φ = 2613600.

The previous prime is 8640823. The next prime is 8640859. The reversal of 8640852 is 2580468.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8640859) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15702 + ... + 16242.

It is an arithmetic number, because the mean of its divisors is an integer number (462868).

Almost surely, 2^8640852 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 8640852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11108832).

8640852 is an abundant number, since it is smaller than the sum of its proper divisors (13576812).

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

8640852 is a wasteful number, since it uses less digits than its factorization.

8640852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 8640852 is about 2939.5326159102. The cubic root of 8640852 is about 205.2038582846.

The spelling of 8640852 in words is "eight million, six hundred forty thousand, eight hundred fifty-two".