8921568 has 48 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 2952576.

The previous prime is 8921467. The next prime is 8921569. The reversal of 8921568 is 8651298.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18871 + ... + 19337.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^8921568 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 8921568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11793600).

8921568 is an abundant number, since it is smaller than the sum of its proper divisors (14665632).

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

8921568 is a wasteful number, since it uses less digits than its factorization.

8921568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679 (or 671 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 8921568 is about 2986.8993956945. The cubic root of 8921568 is about 207.4023772653.

The spelling of 8921568 in words is "eight million, nine hundred twenty-one thousand, five hundred sixty-eight".