20202917 has 16 divisors (see below), whose sum is σ = 24026112. Its totient is φ = 16623360.

The previous prime is 20202883. The next prime is 20202943. The reversal of 20202917 is 71920202.

It is a cyclic number.

It is not a de Polignac number, because 20202917 - 2¹² = 20198821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202892 and 20202901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202517) 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 15 ways as a sum of consecutive naturals, for example, 33773 + ... + 34365.

It is an arithmetic number, because the mean of its divisors is an integer number (1501632).

Almost surely, 2^20202917 is an apocalyptic number.

It is an amenable number.

20202917 is a deficient number, since it is larger than the sum of its proper divisors (3823195).

20202917 is a wasteful number, since it uses less digits than its factorization.

20202917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20202917 is about 4494.7655111251. The cubic root of 20202917 is about 272.3566768690.

The spelling of 20202917 in words is "twenty million, two hundred two thousand, nine hundred seventeen".