163240 has 64 divisors (see below), whose sum is σ = 466560. Its totient is φ = 49920.

The previous prime is 163223. The next prime is 163243. The reversal of 163240 is 42361.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (163243) by changing a digit.

163240 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 15 ways as a sum of consecutive naturals, for example, 3054 + ... + 3106.

It is an arithmetic number, because the mean of its divisors is an integer number (7290).

2¹⁶³²⁴⁰ is an apocalyptic number.

163240 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 163240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233280).

163240 is an abundant number, since it is smaller than the sum of its proper divisors (303320).

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

163240 is a wasteful number, since it uses less digits than its factorization.

163240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 163240 is about 404.0297018785. The cubic root of 163240 is about 54.6523526539.

The spelling of 163240 in words is "one hundred sixty-three thousand, two hundred forty".