159796720 has 20 divisors (see below), whose sum is σ = 371527560. Its totient is φ = 63918656.

The previous prime is 159796717. The next prime is 159796727. The reversal of 159796720 is 27697951.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159796727) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 998650 + ... + 998809.

It is an arithmetic number, because the mean of its divisors is an integer number (18576378).

Almost surely, 2^159796720 is an apocalyptic number.

159796720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159796720 is an abundant number, since it is smaller than the sum of its proper divisors (211730840).

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

159796720 is a wasteful number, since it uses less digits than its factorization.

159796720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997472 (or 1997466 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 46.

The square root of 159796720 is about 12641.0727392892. The cubic root of 159796720 is about 542.6535147107.

The spelling of 159796720 in words is "one hundred fifty-nine million, seven hundred ninety-six thousand, seven hundred twenty".