159920720 has 40 divisors (see below), whose sum is σ = 391388640. Its totient is φ = 60600960.

The previous prime is 159920689. The next prime is 159920729. The reversal of 159920720 is 27029951.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159920729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51086 + ... + 54125.

It is an arithmetic number, because the mean of its divisors is an integer number (9784716).

Almost surely, 2^159920720 is an apocalyptic number.

159920720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159920720 is an abundant number, since it is smaller than the sum of its proper divisors (231467920).

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

159920720 is a wasteful number, since it uses less digits than its factorization.

159920720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105243 (or 105237 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 159920720 is about 12645.9764352145. The cubic root of 159920720 is about 542.7938422431.

The spelling of 159920720 in words is "one hundred fifty-nine million, nine hundred twenty thousand, seven hundred twenty".