20942833 has 2 divisors, whose sum is σ = 20942834. Its totient is φ = 20942832.

The previous prime is 20942813. The next prime is 20942863. The reversal of 20942833 is 33824902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 4524129 = 4052^2 + 2127^2 .

It is a cyclic number.

It is not a de Polignac number, because 20942833 - 2¹⁷ = 20811761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20942795 and 20942804.

It is not a weakly prime, because it can be changed into another prime (20942813) 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, 10471416 + 10471417.

It is an arithmetic number, because the mean of its divisors is an integer number (10471417).

Almost surely, 2^20942833 is an apocalyptic number.

It is an amenable number.

20942833 is a deficient number, since it is larger than the sum of its proper divisors (1).

20942833 is an equidigital number, since it uses as much as digits as its factorization.

20942833 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20942833 is about 4576.3340131594. The cubic root of 20942833 is about 275.6418418416.

The spelling of 20942833 in words is "twenty million, nine hundred forty-two thousand, eight hundred thirty-three".