159728346 has 48 divisors (see below), whose sum is σ = 360477000. Its totient is φ = 51053184.

The previous prime is 159728341. The next prime is 159728347. The reversal of 159728346 is 643827951.

159728346 is a `hidden beast` number, since 1 + 597 + 28 + 34 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 143640225 + 16088121 = 11985^2 + 4011^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (159728341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80980 + ... + 82928.

Almost surely, 2^159728346 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159728346, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180238500).

159728346 is an abundant number, since it is smaller than the sum of its proper divisors (200748654).

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

159728346 is a wasteful number, since it uses less digits than its factorization.

159728346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2140 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 159728346 is about 12638.3680117332. The cubic root of 159728346 is about 542.5761066041.

The spelling of 159728346 in words is "one hundred fifty-nine million, seven hundred twenty-eight thousand, three hundred forty-six".