8722944 has 80 divisors (see below), whose sum is σ = 25861440. Its totient is φ = 2903040.

The previous prime is 8722913. The next prime is 8722949. The reversal of 8722944 is 4492278.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 8³ + 7³ + 2¹³ + 2²³ + 9⁵ + 4⁶ + 4⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 8722899 and 8722908.

It is not an unprimeable number, because it can be changed into a prime (8722949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13509 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (323268).

Almost surely, 2^8722944 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 8722944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12930720).

8722944 is an abundant number, since it is smaller than the sum of its proper divisors (17138496).

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

8722944 is an equidigital number, since it uses as much as digits as its factorization.

8722944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 636 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 8722944 is about 2953.4630520797. The cubic root of 8722944 is about 205.8516542816.

The spelling of 8722944 in words is "eight million, seven hundred twenty-two thousand, nine hundred forty-four".