118530 has 32 divisors (see below), whose sum is σ = 316800. Its totient is φ = 31536.

The previous prime is 118529. The next prime is 118543. The reversal of 118530 is 35811.

It is a happy number.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51 + ... + 489.

It is an arithmetic number, because the mean of its divisors is an integer number (9900).

2¹¹⁸⁵³⁰ is an apocalyptic number.

118530 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 118530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158400).

118530 is an abundant number, since it is smaller than the sum of its proper divisors (198270).

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

118530 is a wasteful number, since it uses less digits than its factorization.

118530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 118530 is about 344.2818612707. The cubic root of 118530 is about 49.1220061109.

The spelling of 118530 in words is "one hundred eighteen thousand, five hundred thirty".