20243717 has 8 divisors (see below), whose sum is σ = 21901824. Its totient is φ = 18600048.

The previous prime is 20243693. The next prime is 20243747. The reversal of 20243717 is 71734202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20243717 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 (20243747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593 + ... + 6390.

It is an arithmetic number, because the mean of its divisors is an integer number (2737728).

Almost surely, 2^20243717 is an apocalyptic number.

It is an amenable number.

20243717 is a deficient number, since it is larger than the sum of its proper divisors (1658107).

20243717 is a wasteful number, since it uses less digits than its factorization.

20243717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 20243717 is about 4499.3018347295. The cubic root of 20243717 is about 272.5398959627.

Adding to 20243717 its reverse (71734202), we get a palindrome (91977919).

The spelling of 20243717 in words is "twenty million, two hundred forty-three thousand, seven hundred seventeen".