159788172 has 24 divisors (see below), whose sum is σ = 381510976. Its totient is φ = 52023888.

The previous prime is 159788159. The next prime is 159788177. The reversal of 159788172 is 271887951.

It is a happy number.

It is a super-2 number, since 2×159788172² = 51064519822203168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159788177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154318 + ... + 155349.

Almost surely, 2^159788172 is an apocalyptic number.

159788172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

159788172 is an abundant number, since it is smaller than the sum of its proper divisors (221722804).

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

159788172 is a wasteful number, since it uses less digits than its factorization.

159788172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309717 (or 309715 counting only the distinct ones).

The product of its digits is 282240, while the sum is 48.

The square root of 159788172 is about 12640.7346305506. The cubic root of 159788172 is about 542.6438384901.

The spelling of 159788172 in words is "one hundred fifty-nine million, seven hundred eighty-eight thousand, one hundred seventy-two".