20240517 has 32 divisors (see below), whose sum is σ = 30708864. Its totient is φ = 11848320.

The previous prime is 20240459. The next prime is 20240531. The reversal of 20240517 is 71504202.

It is not a de Polignac number, because 20240517 - 2⁸ = 20240261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20240493 and 20240502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244517) 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 31 ways as a sum of consecutive naturals, for example, 147673 + ... + 147809.

It is an arithmetic number, because the mean of its divisors is an integer number (959652).

Almost surely, 2^20240517 is an apocalyptic number.

It is an amenable number.

20240517 is a deficient number, since it is larger than the sum of its proper divisors (10468347).

20240517 is a wasteful number, since it uses less digits than its factorization.

20240517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20240517 is about 4498.9462099474. The cubic root of 20240517 is about 272.5255347393.

Adding to 20240517 its reverse (71504202), we get a palindrome (91744719).

The spelling of 20240517 in words is "twenty million, two hundred forty thousand, five hundred seventeen".