20570029 has 2 divisors, whose sum is σ = 20570030. Its totient is φ = 20570028.

The previous prime is 20570021. The next prime is 20570041. The reversal of 20570029 is 92007502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 4848804 = 3965^2 + 2202^2 .

It is a cyclic number.

It is not a de Polignac number, because 20570029 - 2³ = 20570021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20569985 and 20570012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20570021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10285014 + 10285015.

It is an arithmetic number, because the mean of its divisors is an integer number (10285015).

Almost surely, 2^20570029 is an apocalyptic number.

It is an amenable number.

20570029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20570029 is an equidigital number, since it uses as much as digits as its factorization.

20570029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 20570029 is about 4535.4193852388. The cubic root of 20570029 is about 273.9964701980.

The spelling of 20570029 in words is "twenty million, five hundred seventy thousand, twenty-nine".