4531728 has 40 divisors (see below), whose sum is σ = 12325600. Its totient is φ = 1430784.

The previous prime is 4531663. The next prime is 4531729. The reversal of 4531728 is 8271354.

It is a junction number, because it is equal to n+sod(n) for n = 4531695 and 4531704.

It is not an unprimeable number, because it can be changed into a prime (4531729) 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 7 ways as a sum of consecutive naturals, for example, 1573 + ... + 3396.

It is an arithmetic number, because the mean of its divisors is an integer number (308140).

Almost surely, 2^4531728 is an apocalyptic number.

4531728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4531728 is an abundant number, since it is smaller than the sum of its proper divisors (7793872).

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

4531728 is a wasteful number, since it uses less digits than its factorization.

4531728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999 (or 4993 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 4531728 is about 2128.7855692859. The cubic root of 4531728 is about 165.4834672228.

The spelling of 4531728 in words is "four million, five hundred thirty-one thousand, seven hundred twenty-eight".