24040221 has 16 divisors (see below), whose sum is σ = 34529280. Its totient is φ = 14834160.

The previous prime is 24040213. The next prime is 24040229. The reversal of 24040221 is 12204042.

It is an interprime number because it is at equal distance from previous prime (24040213) and next prime (24040229).

It is not a de Polignac number, because 24040221 - 2³ = 24040213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24040221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24040229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3481 + ... + 7758.

It is an arithmetic number, because the mean of its divisors is an integer number (2158080).

Almost surely, 2^24040221 is an apocalyptic number.

It is an amenable number.

24040221 is a deficient number, since it is larger than the sum of its proper divisors (10489059).

24040221 is a wasteful number, since it uses less digits than its factorization.

24040221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11296.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 24040221 is about 4903.0828057458. The cubic root of 24040221 is about 288.6109594642.

Adding to 24040221 its reverse (12204042), we get a palindrome (36244263).

The spelling of 24040221 in words is "twenty-four million, forty thousand, two hundred twenty-one".