161592112 has 120 divisors (see below), whose sum is σ = 379975680. Its totient is φ = 66211200.

The previous prime is 161592107. The next prime is 161592113. The reversal of 161592112 is 211295161.

It is a super-2 number, since 2×161592112² = 52224021321241088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161592113) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 845937 + ... + 846127.

It is an arithmetic number, because the mean of its divisors is an integer number (3166464).

Almost surely, 2^161592112 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 161592112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189987840).

161592112 is an abundant number, since it is smaller than the sum of its proper divisors (218383568).

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

161592112 is a wasteful number, since it uses less digits than its factorization.

161592112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 246 counting only the distinct ones).

The product of its digits is 1080, while the sum is 28.

The square root of 161592112 is about 12711.8886087001. Note that the first 3 decimals coincide. The cubic root of 161592112 is about 544.6782737683.

The spelling of 161592112 in words is "one hundred sixty-one million, five hundred ninety-two thousand, one hundred twelve".