20826427 has 2 divisors, whose sum is σ = 20826428. Its totient is φ = 20826426.

The previous prime is 20826419. The next prime is 20826439. The reversal of 20826427 is 72462802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20826427 - 2³ = 20826419 is a prime.

It is not a weakly prime, because it can be changed into another prime (20823427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10413213 + 10413214.

It is an arithmetic number, because the mean of its divisors is an integer number (10413214).

Almost surely, 2^20826427 is an apocalyptic number.

20826427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20826427 is an equidigital number, since it uses as much as digits as its factorization.

20826427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 20826427 is about 4563.5980322548. The cubic root of 20826427 is about 275.1301951004.

The spelling of 20826427 in words is "twenty million, eight hundred twenty-six thousand, four hundred twenty-seven".