8722000 has 120 divisors (see below), whose sum is σ = 24808680. Its totient is φ = 2956800.

The previous prime is 8721997. The next prime is 8722001. The reversal of 8722000 is 2278.

It can be written as a sum of positive squares in 4 ways, for example, as 1192464 + 7529536 = 1092^2 + 2744^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8722001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97956 + ... + 98044.

It is an arithmetic number, because the mean of its divisors is an integer number (206739).

Almost surely, 2^8722000 is an apocalyptic number.

8722000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8722000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12404340).

8722000 is an abundant number, since it is smaller than the sum of its proper divisors (16086680).

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

8722000 is a wasteful number, since it uses less digits than its factorization.

8722000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 8722000 is about 2953.3032353621. The cubic root of 8722000 is about 205.8442282347.

Adding to 8722000 its reverse (2278), we get a palindrome (8724278).

The spelling of 8722000 in words is "eight million, seven hundred twenty-two thousand".