8720772 has 48 divisors (see below), whose sum is σ = 22364160. Its totient is φ = 2632608.

The previous prime is 8720771. The next prime is 8720773. The reversal of 8720772 is 2770278.

It is a happy number.

8720772 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8720771) and next prime (8720773).

It is not an unprimeable number, because it can be changed into a prime (8720771) 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 15 ways as a sum of consecutive naturals, for example, 4413 + ... + 6075.

It is an arithmetic number, because the mean of its divisors is an integer number (465920).

Almost surely, 2^8720772 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 8720772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11182080).

8720772 is an abundant number, since it is smaller than the sum of its proper divisors (13643388).

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

8720772 is a wasteful number, since it uses less digits than its factorization.

8720772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 8720772 is about 2953.0953252477. The cubic root of 8720772 is about 205.8345672787.

The spelling of 8720772 in words is "eight million, seven hundred twenty thousand, seven hundred seventy-two".