8713728 has 120 divisors (see below), whose sum is σ = 26385216. Its totient is φ = 2764800.

The previous prime is 8713721. The next prime is 8713763. The reversal of 8713728 is 8273178.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8713692 and 8713701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8713721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142818 + ... + 142878.

Almost surely, 2^8713728 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 8713728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13192608).

8713728 is an abundant number, since it is smaller than the sum of its proper divisors (17671488).

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

8713728 is a wasteful number, since it uses less digits than its factorization.

8713728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 97 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 8713728 is about 2951.9024374122. The cubic root of 8713728 is about 205.7791329952.

The spelling of 8713728 in words is "eight million, seven hundred thirteen thousand, seven hundred twenty-eight".