159223728 has 40 divisors (see below), whose sum is σ = 422449648. Its totient is φ = 51639552.

The previous prime is 159223703. The next prime is 159223741. The reversal of 159223728 is 827322951.

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, 43051 + ... + 46602.

Almost surely, 2^159223728 is an apocalyptic number.

It is an amenable number.

159223728 is an abundant number, since it is smaller than the sum of its proper divisors (263225920).

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

159223728 is a wasteful number, since it uses less digits than its factorization.

159223728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89701 (or 89695 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 159223728 is about 12618.3884866492. The cubic root of 159223728 is about 542.0041302681.

It can be divided in two parts, 159223 and 728, that added together give a palindrome (159951).

The spelling of 159223728 in words is "one hundred fifty-nine million, two hundred twenty-three thousand, seven hundred twenty-eight".