20712883 has 2 divisors, whose sum is σ = 20712884. Its totient is φ = 20712882.

The previous prime is 20712871. The next prime is 20712889. The reversal of 20712883 is 38821702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20712883 - 2¹⁷ = 20581811 is a prime.

It is not a weakly prime, because it can be changed into another prime (20712889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10356441 + 10356442.

It is an arithmetic number, because the mean of its divisors is an integer number (10356442).

Almost surely, 2^20712883 is an apocalyptic number.

20712883 is a deficient number, since it is larger than the sum of its proper divisors (1).

20712883 is an equidigital number, since it uses as much as digits as its factorization.

20712883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 20712883 is about 4551.1408459858. The cubic root of 20712883 is about 274.6292878159.

The spelling of 20712883 in words is "twenty million, seven hundred twelve thousand, eight hundred eighty-three".