159623920 has 40 divisors (see below), whose sum is σ = 381163104. Its totient is φ = 62122752.

The previous prime is 159623909. The next prime is 159623923. The reversal of 159623920 is 29326951.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 159623920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159623923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24004 + ... + 29923.

Almost surely, 2^159623920 is an apocalyptic number.

159623920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159623920 is an abundant number, since it is smaller than the sum of its proper divisors (221539184).

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

159623920 is a wasteful number, since it uses less digits than its factorization.

159623920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53977 (or 53971 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 159623920 is about 12634.2360275562. The cubic root of 159623920 is about 542.4578403815.

The spelling of 159623920 in words is "one hundred fifty-nine million, six hundred twenty-three thousand, nine hundred twenty".