118728 has 48 divisors (see below), whose sum is σ = 343980. Its totient is φ = 36864.

The previous prime is 118717. The next prime is 118739. The reversal of 118728 is 827811.

It is an interprime number because it is at equal distance from previous prime (118717) and next prime (118739).

It can be written as a sum of positive squares in 2 ways, for example, as 116964 + 1764 = 342^2 + 42^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1176 + ... + 1272.

2¹¹⁸⁷²⁸ is an apocalyptic number.

118728 is a gapful number since it is divisible by the number (18) 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 118728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171990).

118728 is an abundant number, since it is smaller than the sum of its proper divisors (225252).

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

118728 is a wasteful number, since it uses less digits than its factorization.

118728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 119 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 118728 is about 344.5692963687. The cubic root of 118728 is about 49.1493430622.

The spelling of 118728 in words is "one hundred eighteen thousand, seven hundred twenty-eight".