159797128 has 16 divisors (see below), whose sum is σ = 299773260. Its totient is φ = 79857600.

The previous prime is 159797111. The next prime is 159797137. The reversal of 159797128 is 821797951.

It can be written as a sum of positive squares in 2 ways, for example, as 136002244 + 23794884 = 11662^2 + 4878^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17158 + ... + 24778.

Almost surely, 2^159797128 is an apocalyptic number.

It is an amenable number.

159797128 is a deficient number, since it is larger than the sum of its proper divisors (139976132).

159797128 is a wasteful number, since it uses less digits than its factorization.

159797128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10248 (or 10244 counting only the distinct ones).

The product of its digits is 317520, while the sum is 49.

The square root of 159797128 is about 12641.0888771498. The cubic root of 159797128 is about 542.6539765526.

The spelling of 159797128 in words is "one hundred fifty-nine million, seven hundred ninety-seven thousand, one hundred twenty-eight".