8520072 has 64 divisors (see below), whose sum is σ = 23673600. Its totient is φ = 2533440.

The previous prime is 8520041. The next prime is 8520079. The reversal of 8520072 is 2700258.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (8520079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15303 + ... + 15849.

It is an arithmetic number, because the mean of its divisors is an integer number (369900).

Almost surely, 2^8520072 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 8520072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11836800).

8520072 is an abundant number, since it is smaller than the sum of its proper divisors (15153528).

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

8520072 is a wasteful number, since it uses less digits than its factorization.

8520072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 8520072 is about 2918.9162372360. The cubic root of 8520072 is about 204.2432699545.

The spelling of 8520072 in words is "eight million, five hundred twenty thousand, seventy-two".