24218 has 4 divisors (see below), whose sum is σ = 36330.
Its totient is φ = 12108.
The previous prime is 24203. The next prime is 24223. The reversal of 24218 is 81242.
Subtracting from 24218 its product of digits (128), we obtain a triangular number (24090 = T219).
It can be divided in two parts, 242 and 18, that multiplied together give a square (4356 = 662).
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in only one way, i.e., 12769 + 11449 = 113^2 + 107^2
It is a Curzon number.
It is a plaindrome in base 5.
It is a junction number, because it is equal to n+sod(n) for n = 24196 and 24205.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6053 + ... + 6056.
224218 is an apocalyptic number.
24218 is a deficient number, since it is larger than the sum of its proper divisors (12112).
24218 is a wasteful number, since it uses less digits than its factorization.
24218 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12111.
The product of its digits is 128, while the sum is 17.
The square root of 24218 is about 155.6213352982.
The cubic root of 24218 is about 28.9320645218.
The spelling of 24218 in words is "twenty-four thousand, two hundred eighteen".