180530 has 16 divisors (see below), whose sum is σ = 371520. Its totient is φ = 61872.

The previous prime is 180511. The next prime is 180533. The reversal of 180530 is 35081.

180530 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 180499 and 180508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1220 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (23220).

2¹⁸⁰⁵³⁰ is an apocalyptic number.

180530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

180530 is an abundant number, since it is smaller than the sum of its proper divisors (190990).

It is a weird number, because it is abundant, but not a pseudoperfect number.

180530 is a wasteful number, since it uses less digits than its factorization.

180530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 180530 is about 424.8882205945. Note that the first 3 decimals coincide. The cubic root of 180530 is about 56.5175239975.

The spelling of 180530 in words is "one hundred eighty thousand, five hundred thirty".