159223136 has 48 divisors (see below), whose sum is σ = 325775520. Its totient is φ = 76538880.

The previous prime is 159223117. The next prime is 159223151. The reversal of 159223136 is 631322951.

159223136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104621 + ... + 106131.

It is an arithmetic number, because the mean of its divisors is an integer number (6786990).

Almost surely, 2^159223136 is an apocalyptic number.

159223136 is a gapful number since it is divisible by the number (16) 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 159223136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162887760).

159223136 is an abundant number, since it is smaller than the sum of its proper divisors (166552384).

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

159223136 is a wasteful number, since it uses less digits than its factorization.

159223136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647 (or 1639 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 159223136 is about 12618.3650287983. The cubic root of 159223136 is about 542.0034585365.

The spelling of 159223136 in words is "one hundred fifty-nine million, two hundred twenty-three thousand, one hundred thirty-six".