8662728 has 16 divisors (see below), whose sum is σ = 21656880. Its totient is φ = 2887568.

The previous prime is 8662657. The next prime is 8662729. The reversal of 8662728 is 8272668.

It is not an unprimeable number, because it can be changed into a prime (8662729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180450 + ... + 180497.

It is an arithmetic number, because the mean of its divisors is an integer number (1353555).

Almost surely, 2^8662728 is an apocalyptic number.

It is an amenable number.

8662728 is an abundant number, since it is smaller than the sum of its proper divisors (12994152).

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

8662728 is a wasteful number, since it uses less digits than its factorization.

8662728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360956 (or 360952 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 8662728 is about 2943.2512634840. The cubic root of 8662728 is about 205.3768835307.

The spelling of 8662728 in words is "eight million, six hundred sixty-two thousand, seven hundred twenty-eight".