8728005 has 48 divisors (see below), whose sum is σ = 16549056. Its totient is φ = 3893760.

The previous prime is 8727989. The next prime is 8728037. The reversal of 8728005 is 5008278.

It is not a de Polignac number, because 8728005 - 2⁴ = 8727989 is a prime.

8728005 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27729 + ... + 28041.

It is an arithmetic number, because the mean of its divisors is an integer number (344772).

Almost surely, 2^8728005 is an apocalyptic number.

It is an amenable number.

8728005 is a deficient number, since it is larger than the sum of its proper divisors (7821051).

8728005 is a wasteful number, since it uses less digits than its factorization.

8728005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 8728005 is about 2954.3197186493. The cubic root of 8728005 is about 205.8914578847.

The spelling of 8728005 in words is "eight million, seven hundred twenty-eight thousand, five".