161104032 has 96 divisors (see below), whose sum is σ = 472752000. Its totient is φ = 53374464.

The previous prime is 161104007. The next prime is 161104033. The reversal of 161104032 is 230401161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 161103996 and 161104014.

It is not an unprimeable number, because it can be changed into a prime (161104033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171468 + ... + 172404.

It is an arithmetic number, because the mean of its divisors is an integer number (4924500).

Almost surely, 2^161104032 is an apocalyptic number.

161104032 is a gapful number since it is divisible by the number (12) 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 161104032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236376000).

161104032 is an abundant number, since it is smaller than the sum of its proper divisors (311647968).

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

161104032 is a wasteful number, since it uses less digits than its factorization.

161104032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155 (or 1141 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 161104032 is about 12692.6763135282. The cubic root of 161104032 is about 544.1293305539.

Adding to 161104032 its reverse (230401161), we get a palindrome (391505193).

The spelling of 161104032 in words is "one hundred sixty-one million, one hundred four thousand, thirty-two".