159320720 has 80 divisors (see below), whose sum is σ = 401016000. Its totient is φ = 58516992.

The previous prime is 159320699. The next prime is 159320731. The reversal of 159320720 is 27023951.

It is a tau number, because it is divible by the number of its divisors (80).

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, 319031 + ... + 319529.

It is an arithmetic number, because the mean of its divisors is an integer number (5012700).

Almost surely, 2^159320720 is an apocalyptic number.

159320720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159320720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200508000).

159320720 is an abundant number, since it is smaller than the sum of its proper divisors (241695280).

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

159320720 is a wasteful number, since it uses less digits than its factorization.

159320720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 159320720 is about 12622.2311815305. The cubic root of 159320720 is about 542.1141628502.

The spelling of 159320720 in words is "one hundred fifty-nine million, three hundred twenty thousand, seven hundred twenty".