161102304 has 288 divisors, whose sum is σ = 546981120. Its totient is φ = 45999360.

The previous prime is 161102299. The next prime is 161102309. The reversal of 161102304 is 403201161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161102299) and next prime (161102309).

It is a tau number, because it is divible by the number of its divisors (288).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161102309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2404479 + ... + 2404545.

It is an arithmetic number, because the mean of its divisors is an integer number (1899240).

Almost surely, 2^161102304 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 161102304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273490560).

161102304 is an abundant number, since it is smaller than the sum of its proper divisors (385878816).

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

161102304 is a wasteful number, since it uses less digits than its factorization.

161102304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 106 counting only the distinct ones).

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

The square root of 161102304 is about 12692.6082425954. The cubic root of 161102304 is about 544.1273851053.

Adding to 161102304 its reverse (403201161), we get a palindrome (564303465).

The spelling of 161102304 in words is "one hundred sixty-one million, one hundred two thousand, three hundred four".