118590 has 32 divisors (see below), whose sum is σ = 293760. Its totient is φ = 30624.

The previous prime is 118589. The next prime is 118603. The reversal of 118590 is 95811.

118590 = 152² + 153² + ... + 156².

It is a self number, because there is not a number n which added to its sum of digits gives 118590.

It is a congruent 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, 1737 + ... + 1803.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

2¹¹⁸⁵⁹⁰ is an apocalyptic number.

118590 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 118590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146880).

118590 is an abundant number, since it is smaller than the sum of its proper divisors (175170).

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

118590 is a wasteful number, since it uses less digits than its factorization.

118590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 118590 is about 344.3689881508. The cubic root of 118590 is about 49.1302932483.

It can be divided in two parts, 1185 and 90, that added together give a triangular number (1275 = T₅₀).

The spelling of 118590 in words is "one hundred eighteen thousand, five hundred ninety".