20317386 has 16 divisors (see below), whose sum is σ = 41626368. Its totient is φ = 6607200.

The previous prime is 20317379. The next prime is 20317411. The reversal of 20317386 is 68371302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41050 + ... + 41541.

It is an arithmetic number, because the mean of its divisors is an integer number (2601648).

Almost surely, 2^20317386 is an apocalyptic number.

20317386 is an abundant number, since it is smaller than the sum of its proper divisors (21308982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20317386 is a wasteful number, since it uses less digits than its factorization.

20317386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82637.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 20317386 is about 4507.4811147691. The cubic root of 20317386 is about 272.8700961217.

Adding to 20317386 its reverse (68371302), we get a palindrome (88688688).

The spelling of 20317386 in words is "twenty million, three hundred seventeen thousand, three hundred eighty-six".