159994224 has 160 divisors (see below), whose sum is σ = 511078400. Its totient is φ = 47589120.

The previous prime is 159994223. The next prime is 159994229. The reversal of 159994224 is 422499951.

It is a self number, because there is not a number n which added to its sum of digits gives 159994224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159994223) by changing a digit.

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, 173637 + ... + 174555.

It is an arithmetic number, because the mean of its divisors is an integer number (3194240).

Almost surely, 2^159994224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159994224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255539200).

159994224 is an abundant number, since it is smaller than the sum of its proper divisors (351084176).

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

159994224 is a wasteful number, since it uses less digits than its factorization.

159994224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 968 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 159994224 is about 12648.8823221659. The cubic root of 159994224 is about 542.8769905420.

The spelling of 159994224 in words is "one hundred fifty-nine million, nine hundred ninety-four thousand, two hundred twenty-four".