3085728 has 24 divisors (see below), whose sum is σ = 8100288. Its totient is φ = 1028544.

The previous prime is 3085727. The next prime is 3085739. The reversal of 3085728 is 8275803.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (3085727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15976 + ... + 16167.

It is an arithmetic number, because the mean of its divisors is an integer number (337512).

Almost surely, 2^3085728 is an apocalyptic number.

It is an amenable number.

3085728 is an abundant number, since it is smaller than the sum of its proper divisors (5014560).

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

3085728 is a wasteful number, since it uses less digits than its factorization.

3085728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32156 (or 32148 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 3085728 is about 1756.6240349033. The cubic root of 3085728 is about 145.5858658743.

It can be divided in two parts, 30 and 85728, that added together give a palindrome (85758).

The spelling of 3085728 in words is "three million, eighty-five thousand, seven hundred twenty-eight".