243860 has 24 divisors (see below), whose sum is σ = 521640. Its totient is φ = 95744.

The previous prime is 243857. The next prime is 243863. The reversal of 243860 is 68342.

It is a happy number.

243860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (243857) and next prime (243863).

It can be written as a sum of positive squares in 4 ways, for example, as 9604 + 234256 = 98^2 + 484^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712 + ... + 1848.

It is an arithmetic number, because the mean of its divisors is an integer number (21735).

2²⁴³⁸⁶⁰ is an apocalyptic number.

243860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243860 is an abundant number, since it is smaller than the sum of its proper divisors (277780).

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

243860 is a wasteful number, since it uses less digits than its factorization.

243860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 243860 is about 493.8218302181. The cubic root of 243860 is about 62.4760441524.

The spelling of 243860 in words is "two hundred forty-three thousand, eight hundred sixty".