8103728 has 60 divisors (see below), whose sum is σ = 17574768. Its totient is φ = 3611520.

The previous prime is 8103721. The next prime is 8103749. The reversal of 8103728 is 8273018.

It is a zygodrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8103728.

It is not an unprimeable number, because it can be changed into a prime (8103721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132818 + ... + 132878.

Almost surely, 2^8103728 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 8103728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8787384).

8103728 is an abundant number, since it is smaller than the sum of its proper divisors (9471040).

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

8103728 is a wasteful number, since it uses less digits than its factorization.

8103728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 8103728 is about 2846.7047616499. The cubic root of 8103728 is about 200.8606907440.

The spelling of 8103728 in words is "eight million, one hundred three thousand, seven hundred twenty-eight".