5266259728 has 60 divisors (see below), whose sum is σ = 11132187172. Its totient is φ = 2411182080.

The previous prime is 5266259717. The next prime is 5266259729. The reversal of 5266259728 is 8279526625.

It can be written as a sum of positive squares in 6 ways, for example, as 690007824 + 4576251904 = 26268^2 + 67648^2 .

It is not an unprimeable number, because it can be changed into a prime (5266259729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155698 + ... + 186478.

Almost surely, 2^5266259728 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 5266259728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5566093586).

5266259728 is an abundant number, since it is smaller than the sum of its proper divisors (5865927444).

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

5266259728 is a wasteful number, since it uses less digits than its factorization.

5266259728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30860 (or 30837 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 52.

The square root of 5266259728 is about 72568.9997726302. Note that the first 3 decimals coincide. The cubic root of 5266259728 is about 1739.8057351269.

The spelling of 5266259728 in words is "five billion, two hundred sixty-six million, two hundred fifty-nine thousand, seven hundred twenty-eight".