8518720 has 56 divisors (see below), whose sum is σ = 23189184. Its totient is φ = 2919936.

The previous prime is 8518709. The next prime is 8518723. The reversal of 8518720 is 278158.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (8518723) 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, 339 + ... + 4141.

Almost surely, 2^8518720 is an apocalyptic number.

8518720 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 8518720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11594592).

8518720 is an abundant number, since it is smaller than the sum of its proper divisors (14670464).

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

8518720 is a wasteful number, since it uses less digits than its factorization.

8518720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 8518720 is about 2918.6846352424. The cubic root of 8518720 is about 204.2324659962.

The spelling of 8518720 in words is "eight million, five hundred eighteen thousand, seven hundred twenty".