161336800 has 72 divisors (see below), whose sum is σ = 417067056. Its totient is φ = 60733440.

The previous prime is 161336713. The next prime is 161336801. The reversal of 161336800 is 8633161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161336801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7669 + ... + 19531.

It is an arithmetic number, because the mean of its divisors is an integer number (5792598).

Almost surely, 2^161336800 is an apocalyptic number.

161336800 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 161336800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208533528).

161336800 is an abundant number, since it is smaller than the sum of its proper divisors (255730256).

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

161336800 is a wasteful number, since it uses less digits than its factorization.

161336800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11900 (or 11887 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 161336800 is about 12701.8423860478. The cubic root of 161336800 is about 544.3912626413.

Adding to 161336800 its reverse (8633161), we get a palindrome (169969961).

The spelling of 161336800 in words is "one hundred sixty-one million, three hundred thirty-six thousand, eight hundred".