243486 has 28 divisors (see below), whose sum is σ = 550872. Its totient is φ = 80676.

The previous prime is 243479. The next prime is 243487. The reversal of 243486 is 684342.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243487) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1375 + ... + 1541.

It is an arithmetic number, because the mean of its divisors is an integer number (19674).

243486 is a Friedman number, since it can be written as 3^6*(84*4-2), using all its digits and the basic arithmetic operations.

2²⁴³⁴⁸⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275436).

243486 is an abundant number, since it is smaller than the sum of its proper divisors (307386).

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

243486 is an equidigital number, since it uses as much as digits as its factorization.

243486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 172 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 243486 is about 493.4430058274. The cubic root of 243486 is about 62.4440886643. Note that the first 3 decimals are identical.

It can be divided in two parts, 243 and 486, that added together give a 6-th power (729 = 3⁶).

The spelling of 243486 in words is "two hundred forty-three thousand, four hundred eighty-six".