159740728 has 64 divisors (see below), whose sum is σ = 352719360. Its totient is φ = 66408576.

The previous prime is 159740701. The next prime is 159740731. The reversal of 159740728 is 827047951.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317325 + ... + 317827.

It is an arithmetic number, because the mean of its divisors is an integer number (5511240).

Almost surely, 2^159740728 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 159740728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176359680).

159740728 is an abundant number, since it is smaller than the sum of its proper divisors (192978632).

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

159740728 is a wasteful number, since it uses less digits than its factorization.

159740728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 159740728 is about 12638.8578597910. The cubic root of 159740728 is about 542.5901262483.

The spelling of 159740728 in words is "one hundred fifty-nine million, seven hundred forty thousand, seven hundred twenty-eight".