159639040 has 80 divisors (see below), whose sum is σ = 417629520. Its totient is φ = 58040320.

The previous prime is 159639023. The next prime is 159639041. The reversal of 159639040 is 40936951.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159639041) 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, 25326 + ... + 30994.

It is an arithmetic number, because the mean of its divisors is an integer number (5220369).

Almost surely, 2^159639040 is an apocalyptic number.

159639040 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 159639040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208814760).

159639040 is an abundant number, since it is smaller than the sum of its proper divisors (257990480).

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

159639040 is an equidigital number, since it uses as much as digits as its factorization.

159639040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703 (or 5687 counting only the distinct ones).

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

The square root of 159639040 is about 12634.8343875177. The cubic root of 159639040 is about 542.4749675213.

The spelling of 159639040 in words is "one hundred fifty-nine million, six hundred thirty-nine thousand, forty".