4787728 has 30 divisors (see below), whose sum is σ = 10200302. Its totient is φ = 2175360.

The previous prime is 4787719. The next prime is 4787729. The reversal of 4787728 is 8277874.

It can be written as a sum of positive squares in only one way, i.e., 4460544 + 327184 = 2112^2 + 572^2 .

It is not an unprimeable number, because it can be changed into a prime (4787729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 700 + ... + 3172.

Almost surely, 2^4787728 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 4787728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5100151).

4787728 is an abundant number, since it is smaller than the sum of its proper divisors (5412574).

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

4787728 is a wasteful number, since it uses less digits than its factorization.

4787728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503 (or 2486 counting only the distinct ones).

The product of its digits is 175616, while the sum is 43.

The square root of 4787728 is about 2188.0877496115. The cubic root of 4787728 is about 168.5426519599.

The spelling of 4787728 in words is "four million, seven hundred eighty-seven thousand, seven hundred twenty-eight".