20316673 has 12 divisors (see below), whose sum is σ = 22135680. Its totient is φ = 18638256.

The previous prime is 20316671. The next prime is 20316677. The reversal of 20316673 is 37661302.

It is not a de Polignac number, because 20316673 - 2¹ = 20316671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20316671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40140 + ... + 40642.

It is an arithmetic number, because the mean of its divisors is an integer number (1844640).

Almost surely, 2^20316673 is an apocalyptic number.

It is an amenable number.

20316673 is a deficient number, since it is larger than the sum of its proper divisors (1819007).

20316673 is a wasteful number, since it uses less digits than its factorization.

20316673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20316673 is about 4507.4020233389. The cubic root of 20316673 is about 272.8669041321.

Adding to 20316673 its reverse (37661302), we get a palindrome (57977975).

The spelling of 20316673 in words is "twenty million, three hundred sixteen thousand, six hundred seventy-three".