20430793 has 2 divisors, whose sum is σ = 20430794. Its totient is φ = 20430792.

The previous prime is 20430769. The next prime is 20430799. The reversal of 20430793 is 39703402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14040009 + 6390784 = 3747^2 + 2528^2 .

It is a cyclic number.

It is not a de Polignac number, because 20430793 - 2¹³ = 20422601 is a prime.

It is not a weakly prime, because it can be changed into another prime (20430799) 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, 10215396 + 10215397.

It is an arithmetic number, because the mean of its divisors is an integer number (10215397).

Almost surely, 2^20430793 is an apocalyptic number.

It is an amenable number.

20430793 is a deficient number, since it is larger than the sum of its proper divisors (1).

20430793 is an equidigital number, since it uses as much as digits as its factorization.

20430793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 20430793 is about 4520.0434732423. The cubic root of 20430793 is about 273.3768539004.

The spelling of 20430793 in words is "twenty million, four hundred thirty thousand, seven hundred ninety-three".