24030021 has 16 divisors (see below), whose sum is σ = 32842368. Its totient is φ = 15624000.

The previous prime is 24030007. The next prime is 24030029. The reversal of 24030021 is 12003042.

It is not a de Polignac number, because 24030021 - 2¹¹ = 24027973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24029979 and 24030006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24030029) 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, 20955 + ... + 22071.

It is an arithmetic number, because the mean of its divisors is an integer number (2052648).

Almost surely, 2^24030021 is an apocalyptic number.

It is an amenable number.

24030021 is a deficient number, since it is larger than the sum of its proper divisors (8812347).

24030021 is a wasteful number, since it uses less digits than its factorization.

24030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 24030021 is about 4902.0425334752. The cubic root of 24030021 is about 288.5701355435.

Adding to 24030021 its reverse (12003042), we get a palindrome (36033063).

The spelling of 24030021 in words is "twenty-four million, thirty thousand, twenty-one".