20833427 has 2 divisors, whose sum is σ = 20833428. Its totient is φ = 20833426.

The previous prime is 20833411. The next prime is 20833433. The reversal of 20833427 is 72433802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20833427 - 2⁴ = 20833411 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20833427.

It is not a weakly prime, because it can be changed into another prime (20833487) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10416713 + 10416714.

It is an arithmetic number, because the mean of its divisors is an integer number (10416714).

Almost surely, 2^20833427 is an apocalyptic number.

20833427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20833427 is an equidigital number, since it uses as much as digits as its factorization.

20833427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 20833427 is about 4564.3649065341. The cubic root of 20833427 is about 275.1610164480.

The spelling of 20833427 in words is "twenty million, eight hundred thirty-three thousand, four hundred twenty-seven".