5228728 has 32 divisors (see below), whose sum is σ = 10352160. Its totient is φ = 2471040.

The previous prime is 5228723. The next prime is 5228731. The reversal of 5228728 is 8278225.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 5228693 and 5228702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5228723) 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, 28798 + ... + 28978.

It is an arithmetic number, because the mean of its divisors is an integer number (323505).

Almost surely, 2^5228728 is an apocalyptic number.

It is an amenable number.

5228728 is a deficient number, since it is larger than the sum of its proper divisors (5123432).

5228728 is a wasteful number, since it uses less digits than its factorization.

5228728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 363 counting only the distinct ones).

The product of its digits is 17920, while the sum is 34.

The square root of 5228728 is about 2286.6412049117. The cubic root of 5228728 is about 173.5662778616.

It can be divided in two parts, 52 and 28728, that multiplied together give a triangular number (1493856 = T₁₇₂₈).

The spelling of 5228728 in words is "five million, two hundred twenty-eight thousand, seven hundred twenty-eight".