5236438728 has 32 divisors (see below), whose sum is σ = 13220717760. Its totient is φ = 1728196800.

The previous prime is 5236438723. The next prime is 5236438759. The reversal of 5236438728 is 8278346325.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5236438723) 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, 1077700 + ... + 1082547.

It is an arithmetic number, because the mean of its divisors is an integer number (413147430).

Almost surely, 2^5236438728 is an apocalyptic number.

It is an amenable number.

5236438728 is an abundant number, since it is smaller than the sum of its proper divisors (7984279032).

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

5236438728 is a wasteful number, since it uses less digits than its factorization.

5236438728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160357 (or 2160353 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The square root of 5236438728 is about 72363.2415526004. The cubic root of 5236438728 is about 1736.5155449926.

The spelling of 5236438728 in words is "five billion, two hundred thirty-six million, four hundred thirty-eight thousand, seven hundred twenty-eight".