5081728 has 48 divisors (see below), whose sum is σ = 10763550. Its totient is φ = 2386944.

The previous prime is 5081719. The next prime is 5081731. The reversal of 5081728 is 8271805.

It can be written as a sum of positive squares in 3 ways, for example, as 5053504 + 28224 = 2248^2 + 168^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5081728.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137326 + ... + 137362.

Almost surely, 2^5081728 is an apocalyptic number.

5081728 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5081728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5381775).

5081728 is an abundant number, since it is smaller than the sum of its proper divisors (5681822).

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

5081728 is an equidigital number, since it uses as much as digits as its factorization.

5081728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 5081728 is about 2254.2688393357. The cubic root of 5081728 is about 171.9242500405.

The spelling of 5081728 in words is "five million, eighty-one thousand, seven hundred twenty-eight".