160731172 has 48 divisors (see below), whose sum is σ = 330265600. Its totient is φ = 68414976.

The previous prime is 160731169. The next prime is 160731223. The reversal of 160731172 is 271137061.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 160731172.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264493 + ... + 265099.

Almost surely, 2^160731172 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 160731172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165132800).

160731172 is an abundant number, since it is smaller than the sum of its proper divisors (169534428).

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

160731172 is a wasteful number, since it uses less digits than its factorization.

160731172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 160731172 is about 12677.9798075245. The cubic root of 160731172 is about 543.7092277175.

The spelling of 160731172 in words is "one hundred sixty million, seven hundred thirty-one thousand, one hundred seventy-two".