159220836 has 96 divisors (see below), whose sum is σ = 448716800. Its totient is φ = 48638880.

The previous prime is 159220807. The next prime is 159220849. The reversal of 159220836 is 638022951.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 159220836.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 62361 + ... + 64863.

Almost surely, 2^159220836 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 159220836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224358400).

159220836 is an abundant number, since it is smaller than the sum of its proper divisors (289495964).

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

159220836 is a wasteful number, since it uses less digits than its factorization.

159220836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566 (or 2558 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 159220836 is about 12618.2738914639. The cubic root of 159220836 is about 542.0008487525. Note that the first 3 decimals are identical.

The spelling of 159220836 in words is "one hundred fifty-nine million, two hundred twenty thousand, eight hundred thirty-six".