24430021 has 12 divisors (see below), whose sum is σ = 30690016. Its totient is φ = 19035720.

The previous prime is 24430019. The next prime is 24430031. The reversal of 24430021 is 12003442.

It is not a de Polignac number, because 24430021 - 2¹ = 24430019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24429977 and 24430004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24430001) 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 11 ways as a sum of consecutive naturals, for example, 13575 + ... + 15268.

Almost surely, 2^24430021 is an apocalyptic number.

It is an amenable number.

24430021 is a deficient number, since it is larger than the sum of its proper divisors (6259995).

24430021 is a wasteful number, since it uses less digits than its factorization.

24430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28872 (or 28861 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 24430021 is about 4942.6734668598. The cubic root of 24430021 is about 290.1624971189.

Adding to 24430021 its reverse (12003442), we get a palindrome (36433463).

The spelling of 24430021 in words is "twenty-four million, four hundred thirty thousand, twenty-one".