8643072 has 80 divisors (see below), whose sum is σ = 24453792. Its totient is φ = 2703360.

The previous prime is 8643059. The next prime is 8643077. The reversal of 8643072 is 2703468.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8643077) 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, 25947 + ... + 26277.

Almost surely, 2^8643072 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 8643072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12226896).

8643072 is an abundant number, since it is smaller than the sum of its proper divisors (15810720).

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

8643072 is a wasteful number, since it uses less digits than its factorization.

8643072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 8643072 is about 2939.9102027103. The cubic root of 8643072 is about 205.2214303774.

The spelling of 8643072 in words is "eight million, six hundred forty-three thousand, seventy-two".