538849728 has 168 divisors, whose sum is σ = 1658264400. Its totient is φ = 166772736.

The previous prime is 538849721. The next prime is 538849739. The reversal of 538849728 is 827948835.

It is a happy number.

538849728 is a `hidden beast` number, since 53 + 88 + 497 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538849721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579568 + ... + 580496.

Almost surely, 2^538849728 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 538849728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829132200).

538849728 is an abundant number, since it is smaller than the sum of its proper divisors (1119414672).

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

538849728 is a wasteful number, since it uses less digits than its factorization.

538849728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1006 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 538849728 is about 23213.1369702589. The cubic root of 538849728 is about 813.7466667946.

The spelling of 538849728 in words is "five hundred thirty-eight million, eight hundred forty-nine thousand, seven hundred twenty-eight".