20829103 has 2 divisors, whose sum is σ = 20829104. Its totient is φ = 20829102.

The previous prime is 20829023. The next prime is 20829167. The reversal of 20829103 is 30192802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20829103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20829503) 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, 10414551 + 10414552.

It is an arithmetic number, because the mean of its divisors is an integer number (10414552).

Almost surely, 2^20829103 is an apocalyptic number.

20829103 is a deficient number, since it is larger than the sum of its proper divisors (1).

20829103 is an equidigital number, since it uses as much as digits as its factorization.

20829103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20829103 is about 4563.8912125510. The cubic root of 20829103 is about 275.1419784766.

The spelling of 20829103 in words is "twenty million, eight hundred twenty-nine thousand, one hundred three".