20958107 has 2 divisors, whose sum is σ = 20958108. Its totient is φ = 20958106.

The previous prime is 20958101. The next prime is 20958151. The reversal of 20958107 is 70185902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20958107 - 2⁶ = 20958043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20958101) 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, 10479053 + 10479054.

It is an arithmetic number, because the mean of its divisors is an integer number (10479054).

Almost surely, 2^20958107 is an apocalyptic number.

20958107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20958107 is an equidigital number, since it uses as much as digits as its factorization.

20958107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 20958107 is about 4578.0025120133. The cubic root of 20958107 is about 275.7088358086.

The spelling of 20958107 in words is "twenty million, nine hundred fifty-eight thousand, one hundred seven".