8349259728 has 120 divisors (see below), whose sum is σ = 22347819648. Its totient is φ = 2684857344.

The previous prime is 8349259687. The next prime is 8349259747. The reversal of 8349259728 is 8279529438.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14079400 + ... + 14079992.

Almost surely, 2^8349259728 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 8349259728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11173909824).

8349259728 is an abundant number, since it is smaller than the sum of its proper divisors (13998559920).

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

8349259728 is a wasteful number, since it uses less digits than its factorization.

8349259728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809 (or 724 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The square root of 8349259728 is about 91374.2837345388. The cubic root of 8349259728 is about 2028.6914105889.

The spelling of 8349259728 in words is "eight billion, three hundred forty-nine million, two hundred fifty-nine thousand, seven hundred twenty-eight".