8535720 has 64 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 2246144.

The previous prime is 8535719. The next prime is 8535721. The reversal of 8535720 is 275358.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8535719) and next prime (8535721).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (8535721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9532 + ... + 10388.

It is an arithmetic number, because the mean of its divisors is an integer number (405405).

Almost surely, 2^8535720 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 8535720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12972960).

8535720 is an abundant number, since it is smaller than the sum of its proper divisors (17410200).

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

8535720 is a wasteful number, since it uses less digits than its factorization.

8535720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 8535720 is about 2921.5954545419. The cubic root of 8535720 is about 204.3682314997.

The spelling of 8535720 in words is "eight million, five hundred thirty-five thousand, seven hundred twenty".