159844720 has 160 divisors (see below), whose sum is σ = 454970880. Its totient is φ = 51010560.

The previous prime is 159844709. The next prime is 159844787. The reversal of 159844720 is 27448951.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883030 + ... + 883210.

It is an arithmetic number, because the mean of its divisors is an integer number (2843568).

Almost surely, 2^159844720 is an apocalyptic number.

159844720 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 159844720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227485440).

159844720 is an abundant number, since it is smaller than the sum of its proper divisors (295126160).

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

159844720 is a wasteful number, since it uses less digits than its factorization.

159844720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 159844720 is about 12642.9711697844. The cubic root of 159844720 is about 542.7078436546.

The spelling of 159844720 in words is "one hundred fifty-nine million, eight hundred forty-four thousand, seven hundred twenty".