159616720 has 80 divisors (see below), whose sum is σ = 393546240. Its totient is φ = 60037632.

The previous prime is 159616679. The next prime is 159616727. The reversal of 159616720 is 27616951.

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

It is a self number, because there is not a number n which added to its sum of digits gives 159616720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159616727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262657 + ... + 263263.

It is an arithmetic number, because the mean of its divisors is an integer number (4919328).

Almost surely, 2^159616720 is an apocalyptic number.

159616720 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 159616720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196773120).

159616720 is an abundant number, since it is smaller than the sum of its proper divisors (233929520).

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

159616720 is a wasteful number, since it uses less digits than its factorization.

159616720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 159616720 is about 12633.9510842808. The cubic root of 159616720 is about 542.4496842205.

The spelling of 159616720 in words is "one hundred fifty-nine million, six hundred sixteen thousand, seven hundred twenty".