8728489 has 8 divisors (see below), whose sum is σ = 10882368. Its totient is φ = 6801360.

The previous prime is 8728483. The next prime is 8728513. The reversal of 8728489 is 9848278.

8728489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 8728489 - 2³ = 8728481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8728481) 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, 56602 + ... + 56755.

It is an arithmetic number, because the mean of its divisors is an integer number (1360296).

Almost surely, 2^8728489 is an apocalyptic number.

It is an amenable number.

8728489 is a deficient number, since it is larger than the sum of its proper divisors (2153879).

8728489 is a wasteful number, since it uses less digits than its factorization.

8728489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113375.

The product of its digits is 258048, while the sum is 46.

The square root of 8728489 is about 2954.4016314645. The cubic root of 8728489 is about 205.8952636273.

The spelling of 8728489 in words is "eight million, seven hundred twenty-eight thousand, four hundred eighty-nine".