24220247 has 4 divisors (see below), whose sum is σ = 24231696. Its totient is φ = 24208800.

The previous prime is 24220213. The next prime is 24220271. The reversal of 24220247 is 74202242.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 24220247 - 2⁸ = 24219991 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 (24220447) 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, 1523 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (6057924).

Almost surely, 2^24220247 is an apocalyptic number.

24220247 is a deficient number, since it is larger than the sum of its proper divisors (11449).

24220247 is an equidigital number, since it uses as much as digits as its factorization.

24220247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11448.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 24220247 is about 4921.4070142592. The cubic root of 24220247 is about 289.3295928797.

Adding to 24220247 its reverse (74202242), we get a palindrome (98422489).

The spelling of 24220247 in words is "twenty-four million, two hundred twenty thousand, two hundred forty-seven".