5538728 has 32 divisors (see below), whose sum is σ = 11776800. Its totient is φ = 2420928.

The previous prime is 5538727. The next prime is 5538749. The reversal of 5538728 is 8278355.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 5538691 and 5538700.

It is not an unprimeable number, because it can be changed into a prime (5538721) 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, 575 + ... + 3377.

It is an arithmetic number, because the mean of its divisors is an integer number (368025).

Almost surely, 2^5538728 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 5538728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5888400).

5538728 is an abundant number, since it is smaller than the sum of its proper divisors (6238072).

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

5538728 is a wasteful number, since it uses less digits than its factorization.

5538728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841 (or 2837 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 5538728 is about 2353.4502331683. The cubic root of 5538728 is about 176.9307612192.

It can be divided in two parts, 55 and 38728, that added together give a palindrome (38783).

The spelling of 5538728 in words is "five million, five hundred thirty-eight thousand, seven hundred twenty-eight".