20324247 has 8 divisors (see below), whose sum is σ = 27480960. Its totient is φ = 13358520.

The previous prime is 20324237. The next prime is 20324267. The reversal of 20324247 is 74242302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20324247 - 2¹¹ = 20322199 is a prime.

It is a super-2 number, since 2×20324247² = 826150032234018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20324207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47497 + ... + 47922.

It is an arithmetic number, because the mean of its divisors is an integer number (3435120).

Almost surely, 2^20324247 is an apocalyptic number.

20324247 is a deficient number, since it is larger than the sum of its proper divisors (7156713).

20324247 is an equidigital number, since it uses as much as digits as its factorization.

20324247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95493.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 20324247 is about 4508.2421186090. The cubic root of 20324247 is about 272.9008079306.

Adding to 20324247 its reverse (74242302), we get a palindrome (94566549).

The spelling of 20324247 in words is "twenty million, three hundred twenty-four thousand, two hundred forty-seven".