20794847 has 2 divisors, whose sum is σ = 20794848. Its totient is φ = 20794846.

The previous prime is 20794771. The next prime is 20794849. The reversal of 20794847 is 74849702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20794847 - 2¹² = 20790751 is a prime.

Together with 20794849, 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 (20794849) 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, 10397423 + 10397424.

It is an arithmetic number, because the mean of its divisors is an integer number (10397424).

Almost surely, 2^20794847 is an apocalyptic number.

20794847 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794847 is an equidigital number, since it uses as much as digits as its factorization.

20794847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 20794847 is about 4560.1367304062. The cubic root of 20794847 is about 274.9910608665.

The spelling of 20794847 in words is "twenty million, seven hundred ninety-four thousand, eight hundred forty-seven".