7163728 has 80 divisors (see below), whose sum is σ = 16998912. Its totient is φ = 2880000.

The previous prime is 7163719. The next prime is 7163729. The reversal of 7163728 is 8273617.

It is a junction number, because it is equal to n+sod(n) for n = 7163693 and 7163702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7163729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70878 + ... + 70978.

Almost surely, 2^7163728 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 7163728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8499456).

7163728 is an abundant number, since it is smaller than the sum of its proper divisors (9835184).

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

7163728 is a wasteful number, since it uses less digits than its factorization.

7163728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 158 counting only the distinct ones).

The product of its digits is 14112, while the sum is 34.

The square root of 7163728 is about 2676.5141509060. The cubic root of 7163728 is about 192.7730694753.

It can be divided in two parts, 716 and 3728, that added together give a palindrome (4444).

The spelling of 7163728 in words is "seven million, one hundred sixty-three thousand, seven hundred twenty-eight".