24228409 has 4 divisors (see below), whose sum is σ = 24639120. Its totient is φ = 23817700.

The previous prime is 24228389. The next prime is 24228433. The reversal of 24228409 is 90482242.

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-24228409 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24228469) 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 3 ways as a sum of consecutive naturals, for example, 205267 + ... + 205384.

It is an arithmetic number, because the mean of its divisors is an integer number (6159780).

Almost surely, 2^24228409 is an apocalyptic number.

It is an amenable number.

24228409 is a deficient number, since it is larger than the sum of its proper divisors (410711).

24228409 is an equidigital number, since it uses as much as digits as its factorization.

24228409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410710.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 24228409 is about 4922.2361788114. The cubic root of 24228409 is about 289.3620896983.

The spelling of 24228409 in words is "twenty-four million, two hundred twenty-eight thousand, four hundred nine".