8528729 has 8 divisors (see below), whose sum is σ = 9344160. Its totient is φ = 7720000.

The previous prime is 8528717. The next prime is 8528783. The reversal of 8528729 is 9278258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8528729 - 2¹⁶ = 8463193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8528789) 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, 1217 + ... + 4305.

It is an arithmetic number, because the mean of its divisors is an integer number (1168020).

Almost surely, 2^8528729 is an apocalyptic number.

It is an amenable number.

8528729 is a deficient number, since it is larger than the sum of its proper divisors (815431).

8528729 is a wasteful number, since it uses less digits than its factorization.

8528729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351.

The product of its digits is 80640, while the sum is 41.

The square root of 8528729 is about 2920.3987741403. The cubic root of 8528729 is about 204.3124217753.

The spelling of 8528729 in words is "eight million, five hundred twenty-eight thousand, seven hundred twenty-nine".