8704720 has 40 divisors (see below), whose sum is σ = 20630376. Its totient is φ = 3414528.

The previous prime is 8704711. The next prime is 8704721. The reversal of 8704720 is 274078.

It can be written as a sum of positive squares in 4 ways, for example, as 1607824 + 7096896 = 1268^2 + 2664^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8704721) 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, 3214 + ... + 5266.

Almost surely, 2^8704720 is an apocalyptic number.

8704720 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 8704720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10315188).

8704720 is an abundant number, since it is smaller than the sum of its proper divisors (11925656).

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

8704720 is a wasteful number, since it uses less digits than its factorization.

8704720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119 (or 2113 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 8704720 is about 2950.3762471929. The cubic root of 8704720 is about 205.7081990410.

Adding to 8704720 its reverse (274078), we get a palindrome (8978798).

The spelling of 8704720 in words is "eight million, seven hundred four thousand, seven hundred twenty".