24424421 has 4 divisors (see below), whose sum is σ = 27913632. Its totient is φ = 20935212.

The previous prime is 24424399. The next prime is 24424441. The reversal of 24424421 is 12442442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24424421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24424441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1744595 + ... + 1744608.

It is an arithmetic number, because the mean of its divisors is an integer number (6978408).

Almost surely, 2^24424421 is an apocalyptic number.

It is an amenable number.

24424421 is a deficient number, since it is larger than the sum of its proper divisors (3489211).

24424421 is an equidigital number, since it uses as much as digits as its factorization.

24424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489210.

The product of its digits is 2048, while the sum is 23.

The square root of 24424421 is about 4942.1069393529. The cubic root of 24424421 is about 290.1403244792.

Adding to 24424421 its reverse (12442442), we get a palindrome (36866863).

The spelling of 24424421 in words is "twenty-four million, four hundred twenty-four thousand, four hundred twenty-one".