20012193 has 12 divisors (see below), whose sum is σ = 29008980. Its totient is φ = 13294176.

The previous prime is 20012191. The next prime is 20012203. The reversal of 20012193 is 39121002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8803089 + 11209104 = 2967^2 + 3348^2 .

It is not a de Polignac number, because 20012193 - 2¹ = 20012191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012191) 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 11 ways as a sum of consecutive naturals, for example, 1158 + ... + 6431.

It is an arithmetic number, because the mean of its divisors is an integer number (2417415).

Almost surely, 2^20012193 is an apocalyptic number.

It is an amenable number.

20012193 is a deficient number, since it is larger than the sum of its proper divisors (8996787).

20012193 is a wasteful number, since it uses less digits than its factorization.

20012193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7888 (or 7885 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 20012193 is about 4473.4989661338. The cubic root of 20012193 is about 271.4969119436.

Adding to 20012193 its product of nonzero digits (108), we get a triangular number (20012301 = T₆₃₂₆).

Adding to 20012193 its reverse (39121002), we get a palindrome (59133195).

The spelling of 20012193 in words is "twenty million, twelve thousand, one hundred ninety-three".