20204413 has 2 divisors, whose sum is σ = 20204414. Its totient is φ = 20204412.

The previous prime is 20204411. The next prime is 20204417. The reversal of 20204413 is 31440202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 9622404 = 3253^2 + 3102^2 .

It is a cyclic number.

It is not a de Polignac number, because 20204413 - 2¹ = 20204411 is a prime.

Together with 20204411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102206 + 10102207.

It is an arithmetic number, because the mean of its divisors is an integer number (10102207).

Almost surely, 2^20204413 is an apocalyptic number.

It is an amenable number.

20204413 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204413 is an equidigital number, since it uses as much as digits as its factorization.

20204413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20204413 is about 4494.9319238449. The cubic root of 20204413 is about 272.3633992568.

Adding to 20204413 its reverse (31440202), we get a palindrome (51644615).

The spelling of 20204413 in words is "twenty million, two hundred four thousand, four hundred thirteen".