159722816 has 56 divisors (see below), whose sum is σ = 363992160. Its totient is φ = 68774400.

The previous prime is 159722813. The next prime is 159722861. The reversal of 159722816 is 618227951.

It is a super-2 number, since 2×159722816² = 51022755901939712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159722813) 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, 7406 + ... + 19346.

It is an arithmetic number, because the mean of its divisors is an integer number (6499860).

Almost surely, 2^159722816 is an apocalyptic number.

159722816 is a gapful number since it is divisible by the number (16) 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 159722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181996080).

159722816 is an abundant number, since it is smaller than the sum of its proper divisors (204269344).

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

159722816 is a wasteful number, since it uses less digits than its factorization.

159722816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11983 (or 11973 counting only the distinct ones).

The product of its digits is 60480, while the sum is 41.

The square root of 159722816 is about 12638.1492315924. The cubic root of 159722816 is about 542.5698449718.

The spelling of 159722816 in words is "one hundred fifty-nine million, seven hundred twenty-two thousand, eight hundred sixteen".