20412193 has 2 divisors, whose sum is σ = 20412194. Its totient is φ = 20412192.

The previous prime is 20412191. The next prime is 20412209. The reversal of 20412193 is 39121402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15776784 + 4635409 = 3972^2 + 2153^2 .

It is a cyclic number.

It is not a de Polignac number, because 20412193 - 2¹ = 20412191 is a prime.

Together with 20412191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20412191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206096 + 10206097.

It is an arithmetic number, because the mean of its divisors is an integer number (10206097).

Almost surely, 2^20412193 is an apocalyptic number.

It is an amenable number.

20412193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20412193 is an equidigital number, since it uses as much as digits as its factorization.

20412193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 20412193 is about 4517.9855024114. The cubic root of 20412193 is about 273.2938688148.

Adding to 20412193 its reverse (39121402), we get a palindrome (59533595).

The spelling of 20412193 in words is "twenty million, four hundred twelve thousand, one hundred ninety-three".