20832971 has 2 divisors, whose sum is σ = 20832972. Its totient is φ = 20832970.

The previous prime is 20832937. The next prime is 20832983. The reversal of 20832971 is 17923802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20832971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20832901) 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, 10416485 + 10416486.

It is an arithmetic number, because the mean of its divisors is an integer number (10416486).

Almost surely, 2^20832971 is an apocalyptic number.

20832971 is a deficient number, since it is larger than the sum of its proper divisors (1).

20832971 is an equidigital number, since it uses as much as digits as its factorization.

20832971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 20832971 is about 4564.3149540758. The cubic root of 20832971 is about 275.1590088676.

The spelling of 20832971 in words is "twenty million, eight hundred thirty-two thousand, nine hundred seventy-one".