20426711 has 2 divisors, whose sum is σ = 20426712. Its totient is φ = 20426710.

The previous prime is 20426689. The next prime is 20426713. The reversal of 20426711 is 11762402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20426711 - 2⁶ = 20426647 is a prime.

Together with 20426713, 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 (20426713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213355 + 10213356.

It is an arithmetic number, because the mean of its divisors is an integer number (10213356).

Almost surely, 2^20426711 is an apocalyptic number.

20426711 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426711 is an equidigital number, since it uses as much as digits as its factorization.

20426711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20426711 is about 4519.5919063561. The cubic root of 20426711 is about 273.3586461124.

The spelling of 20426711 in words is "twenty million, four hundred twenty-six thousand, seven hundred eleven".