24243221 has 8 divisors (see below), whose sum is σ = 25828320. Its totient is φ = 22689072.

The previous prime is 24243199. The next prime is 24243229. The reversal of 24243221 is 12234242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 24243221 - 2¹⁴ = 24226837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24243193 and 24243202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24243229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6110 + ... + 9263.

It is an arithmetic number, because the mean of its divisors is an integer number (3228540).

Almost surely, 2^24243221 is an apocalyptic number.

It is an amenable number.

24243221 is a deficient number, since it is larger than the sum of its proper divisors (1585099).

24243221 is a wasteful number, since it uses less digits than its factorization.

24243221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15475.

The product of its digits is 768, while the sum is 20.

The square root of 24243221 is about 4923.7405496228. The cubic root of 24243221 is about 289.4210447064.

Adding to 24243221 its reverse (12234242), we get a palindrome (36477463).

The spelling of 24243221 in words is "twenty-four million, two hundred forty-three thousand, two hundred twenty-one".