20338057 has 2 divisors, whose sum is σ = 20338058. Its totient is φ = 20338056.

The previous prime is 20338027. The next prime is 20338081. The reversal of 20338057 is 75083302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 942841 = 4404^2 + 971^2 .

It is a cyclic number.

It is not a de Polignac number, because 20338057 - 2⁷ = 20337929 is a prime.

It is not a weakly prime, because it can be changed into another prime (20338027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10169028 + 10169029.

It is an arithmetic number, because the mean of its divisors is an integer number (10169029).

Almost surely, 2^20338057 is an apocalyptic number.

It is an amenable number.

20338057 is a deficient number, since it is larger than the sum of its proper divisors (1).

20338057 is an equidigital number, since it uses as much as digits as its factorization.

20338057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20338057 is about 4509.7734976382. The cubic root of 20338057 is about 272.9626045107.

The spelling of 20338057 in words is "twenty million, three hundred thirty-eight thousand, fifty-seven".