163530 has 48 divisors (see below), whose sum is σ = 449280. Its totient is φ = 41184.

The previous prime is 163517. The next prime is 163543. The reversal of 163530 is 35361.

163530 is a `hidden beast` number, since 1 + 635 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (163517) and next prime (163543).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2031 + ... + 2109.

It is an arithmetic number, because the mean of its divisors is an integer number (9360).

2¹⁶³⁵³⁰ is an apocalyptic number.

163530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224640).

163530 is an abundant number, since it is smaller than the sum of its proper divisors (285750).

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

163530 is a wasteful number, since it uses less digits than its factorization.

163530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 163530 is about 404.3884271341. The cubic root of 163530 is about 54.6846972713.

Adding to 163530 its reverse (35361), we get a palindrome (198891).

The spelling of 163530 in words is "one hundred sixty-three thousand, five hundred thirty".