20417324 has 24 divisors (see below), whose sum is σ = 37805040. Its totient is φ = 9621504.

The previous prime is 20417281. The next prime is 20417329. The reversal of 20417324 is 42371402.

It is a self number, because there is not a number n which added to its sum of digits gives 20417324.

It is not an unprimeable number, because it can be changed into a prime (20417329) 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 7 ways as a sum of consecutive naturals, for example, 17132 + ... + 18284.

It is an arithmetic number, because the mean of its divisors is an integer number (1575210).

Almost surely, 2^20417324 is an apocalyptic number.

It is an amenable number.

20417324 is a deficient number, since it is larger than the sum of its proper divisors (17387716).

20417324 is a wasteful number, since it uses less digits than its factorization.

20417324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1407 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20417324 is about 4518.5533083057. The cubic root of 20417324 is about 273.3167661318.

Adding to 20417324 its reverse (42371402), we get a palindrome (62788726).

The spelling of 20417324 in words is "twenty million, four hundred seventeen thousand, three hundred twenty-four".