163400 has 48 divisors (see below), whose sum is σ = 409200. Its totient is φ = 60480.

The previous prime is 163393. The next prime is 163403. The reversal of 163400 is 4361.

163400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163403) by changing a digit.

163400 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3779 + ... + 3821.

It is an arithmetic number, because the mean of its divisors is an integer number (8525).

2¹⁶³⁴⁰⁰ is an apocalyptic number.

163400 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 163400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204600).

163400 is an abundant number, since it is smaller than the sum of its proper divisors (245800).

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

163400 is a wasteful number, since it uses less digits than its factorization.

163400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 163400 is about 404.2276586282. The cubic root of 163400 is about 54.6702026928.

Adding to 163400 its reverse (4361), we get a palindrome (167761).

The spelling of 163400 in words is "one hundred sixty-three thousand, four hundred".