8702720 has 72 divisors (see below), whose sum is σ = 22492176. Its totient is φ = 3207168.

The previous prime is 8702699. The next prime is 8702731. The reversal of 8702720 is 272078.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 8702720.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16379 + ... + 16901.

Almost surely, 2^8702720 is an apocalyptic number.

8702720 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 8702720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11246088).

8702720 is an abundant number, since it is smaller than the sum of its proper divisors (13789456).

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

8702720 is a wasteful number, since it uses less digits than its factorization.

8702720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557 (or 543 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 8702720 is about 2950.0372878999. The cubic root of 8702720 is about 205.6924433011.

Adding to 8702720 its reverse (272078), we get a palindrome (8974798).

It can be divided in two parts, 870 and 2720, that multiplied together give a triangular number (2366400 = T₂₁₇₅).

The spelling of 8702720 in words is "eight million, seven hundred two thousand, seven hundred twenty".