161443200 has 192 divisors, whose sum is σ = 541840320. Its totient is φ = 42240000.

The previous prime is 161443193. The next prime is 161443229. The reversal of 161443200 is 2344161.

161443200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 643075 + ... + 643325.

It is an arithmetic number, because the mean of its divisors is an integer number (2822085).

Almost surely, 2^161443200 is an apocalyptic number.

161443200 is a gapful number since it is divisible by the number (10) 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 161443200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270920160).

161443200 is an abundant number, since it is smaller than the sum of its proper divisors (380397120).

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

161443200 is a wasteful number, since it uses less digits than its factorization.

161443200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 161443200 is about 12706.0300645009. The cubic root of 161443200 is about 544.5109098673.

Adding to 161443200 its reverse (2344161), we get a palindrome (163787361).

The spelling of 161443200 in words is "one hundred sixty-one million, four hundred forty-three thousand, two hundred".