5197888728 has 24 divisors (see below), whose sum is σ = 14077615500. Its totient is φ = 1732629552.

The previous prime is 5197888721. The next prime is 5197888733. The reversal of 5197888728 is 8278887915.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5197888721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36096378 + ... + 36096521.

Almost surely, 2^5197888728 is an apocalyptic number.

It is an amenable number.

5197888728 is an abundant number, since it is smaller than the sum of its proper divisors (8879726772).

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

5197888728 is a wasteful number, since it uses less digits than its factorization.

5197888728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72192911 (or 72192904 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 63.

The square root of 5197888728 is about 72096.3849856565. The cubic root of 5197888728 is about 1732.2437088947.

The spelling of 5197888728 in words is "five billion, one hundred ninety-seven million, eight hundred eighty-eight thousand, seven hundred twenty-eight".