8787728 has 40 divisors (see below), whose sum is σ = 18138720. Its totient is φ = 4112640.

The previous prime is 8787703. The next prime is 8787733. The reversal of 8787728 is 8277878.

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, 41543 + ... + 41753.

It is an arithmetic number, because the mean of its divisors is an integer number (453468).

Almost surely, 2^8787728 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 8787728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9069360).

8787728 is an abundant number, since it is smaller than the sum of its proper divisors (9350992).

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

8787728 is a wasteful number, since it uses less digits than its factorization.

8787728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 369 counting only the distinct ones).

The product of its digits is 351232, while the sum is 47.

The square root of 8787728 is about 2964.4102280218. The cubic root of 8787728 is about 206.3600076753.

It can be divided in two parts, 8787 and 728, that multiplied together give a palindrome (6396936).

The spelling of 8787728 in words is "eight million, seven hundred eighty-seven thousand, seven hundred twenty-eight".