159994720 has 48 divisors (see below), whose sum is σ = 390192768. Its totient is φ = 61931520.

The previous prime is 159994717. The next prime is 159994729. The reversal of 159994720 is 27499951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159994729) 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 7 ways as a sum of consecutive naturals, for example, 11169 + ... + 21088.

It is an arithmetic number, because the mean of its divisors is an integer number (8129016).

Almost surely, 2^159994720 is an apocalyptic number.

159994720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159994720 is an abundant number, since it is smaller than the sum of its proper divisors (230198048).

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

159994720 is a wasteful number, since it uses less digits than its factorization.

159994720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32303 (or 32295 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 46.

The square root of 159994720 is about 12648.9019286261. The cubic root of 159994720 is about 542.8775515345.

The spelling of 159994720 in words is "one hundred fifty-nine million, nine hundred ninety-four thousand, seven hundred twenty".