4485728 has 48 divisors (see below), whose sum is σ = 9779616. Its totient is φ = 2012160.

The previous prime is 4485721. The next prime is 4485737. The reversal of 4485728 is 8275844.

It is a d-powerful number, because it can be written as 4⁵ + 4¹¹ + 8⁴ + 5⁶ + 7³ + 2¹³ + 8⁶ .

It is a junction number, because it is equal to n+sod(n) for n = 4485691 and 4485700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4485721) 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, 16925 + ... + 17187.

It is an arithmetic number, because the mean of its divisors is an integer number (203742).

Almost surely, 2^4485728 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 4485728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4889808).

4485728 is an abundant number, since it is smaller than the sum of its proper divisors (5293888).

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

4485728 is a wasteful number, since it uses less digits than its factorization.

4485728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 319 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The square root of 4485728 is about 2117.9537294285. The cubic root of 4485728 is about 164.9216401720.

The spelling of 4485728 in words is "four million, four hundred eighty-five thousand, seven hundred twenty-eight".