8728918 has 16 divisors (see below), whose sum is σ = 14745600. Its totient is φ = 3839400.

The previous prime is 8728903. The next prime is 8728921. The reversal of 8728918 is 8198278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5718 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (921600).

Almost surely, 2^8728918 is an apocalyptic number.

8728918 is a deficient number, since it is larger than the sum of its proper divisors (6016682).

8728918 is a wasteful number, since it uses less digits than its factorization.

8728918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12843.

The product of its digits is 64512, while the sum is 43.

The square root of 8728918 is about 2954.4742341066. The cubic root of 8728918 is about 205.8986367817.

The spelling of 8728918 in words is "eight million, seven hundred twenty-eight thousand, nine hundred eighteen".