8755728 has 40 divisors (see below), whose sum is σ = 22915200. Its totient is φ = 2880384.

The previous prime is 8755723. The next prime is 8755729. The reversal of 8755728 is 8275578.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8755728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8755723) 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, 2638 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (572880).

Almost surely, 2^8755728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8755728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11457600).

8755728 is an abundant number, since it is smaller than the sum of its proper divisors (14159472).

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

8755728 is a wasteful number, since it uses less digits than its factorization.

8755728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2393 counting only the distinct ones).

The product of its digits is 156800, while the sum is 42.

The square root of 8755728 is about 2959.0079418616. The cubic root of 8755728 is about 206.1092203673.

The spelling of 8755728 in words is "eight million, seven hundred fifty-five thousand, seven hundred twenty-eight".