20410847 has 2 divisors, whose sum is σ = 20410848. Its totient is φ = 20410846.

The previous prime is 20410843. The next prime is 20410849. The reversal of 20410847 is 74801402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20410847 - 2² = 20410843 is a prime.

Together with 20410849, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20410843) 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, 10205423 + 10205424.

It is an arithmetic number, because the mean of its divisors is an integer number (10205424).

Almost surely, 2^20410847 is an apocalyptic number.

20410847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20410847 is an equidigital number, since it uses as much as digits as its factorization.

20410847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 20410847 is about 4517.8365397610. The cubic root of 20410847 is about 273.2878615943.

The spelling of 20410847 in words is "twenty million, four hundred ten thousand, eight hundred forty-seven".