163520 has 56 divisors (see below), whose sum is σ = 451104. Its totient is φ = 55296.

The previous prime is 163517. The next prime is 163543. The reversal of 163520 is 25361.

163520 is nontrivially palindromic in base 3.

163520 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 (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2204 + ... + 2276.

2¹⁶³⁵²⁰ is an apocalyptic number.

163520 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 163520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225552).

163520 is an abundant number, since it is smaller than the sum of its proper divisors (287584).

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

163520 is an equidigital number, since it uses as much as digits as its factorization.

163520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 163520 is about 404.3760625952. The cubic root of 163520 is about 54.6835825765.

Adding to 163520 its reverse (25361), we get a palindrome (188881).

The spelling of 163520 in words is "one hundred sixty-three thousand, five hundred twenty".